Tuesday, July 31, 2012

AllerTan Suspension


Pronunciation: KLOR-fen-IR-a-meen /FEN-il-EF-rin/pir-IL-a-meen
Generic Name: Chlorpheniramine/Phenylephrine/Pyrilamine
Brand Name: Examples include Nalex-A 12 and Phena-S 12


AllerTan Suspension is used for:

Relieving symptoms of sinus congestion, pressure, runny nose, and sneezing due to colds, upper respiratory tract infections, and allergies. It may also be used for other conditions as determined by your doctor.


AllerTan Suspension is an antihistamine and decongestant combination. The antihistamine works by blocking the action of histamine, which helps reduce symptoms such as watery eyes and sneezing. The decongestant promotes sinus and nasal drainage, which relieves congestion and pressure.


Do NOT use AllerTan Suspension if:


  • you are allergic to any ingredient in AllerTan Suspension

  • you have severe high blood pressure, severe heart blood vessel disease, rapid heartbeat, or severe heart problems

  • you are unable to urinate or are having an asthma attack

  • you take droxidopa, sodium oxybate (GHB) or if you have taken furazolidone or a monoamine oxidase inhibitor (MAOI) (eg, phenelzine) within the last 14 days

Contact your doctor or health care provider right away if any of these apply to you.



Before using AllerTan Suspension:


Some medical conditions may interact with AllerTan Suspension. Tell your doctor or pharmacist if you have any medical conditions, especially if any of the following apply to you:


  • if you are pregnant, planning to become pregnant, or are breast-feeding

  • if you are taking any prescription or nonprescription medicine, herbal preparation, or dietary supplement

  • if you have allergies to medicines, foods, or other substances

  • if you have a history of adrenal gland problems (eg, adrenal gland tumor); heart problems (eg, cor pulmonale; fast, slow, or irregular heartbeat; heart disease); high blood pressure; diabetes; blood vessel problems; stroke; glaucoma or increased pressure in the eye; seizures; or thyroid problems

  • if you have a history of asthma or other breathing problems, chronic cough, lung problems (eg, chronic bronchitis, emphysema), chronic obstructive pulmonary disease (COPD), or sleep apnea

  • if you have a blockage of your bladder, stomach, or bowels; ulcers; trouble sleeping; trouble urinating; an enlarged prostate or other prostate problems

Some MEDICINES MAY INTERACT with AllerTan Suspension. Tell your health care provider if you are taking any other medicines, especially any of the following:


  • Digoxin or droxidopa because the risk of irregular heartbeat or heart attack may be increased

  • Beta-blockers (eg, propranolol), catechol-O-methyltransferase (COMT) inhibitors (eg, tolcapone), furazolidone, indomethacin, linezolid, MAOIs (eg, phenelzine), sodium oxybate (GHB), or tricyclic antidepressants (eg, amitriptyline) because they may increase the risk of AllerTan Suspension's side effects

  • Bromocriptine or hydantoins (eg, phenytoin) because the risk of their side effects may be increased by AllerTan Suspension

  • Guanadrel, guanethidine, mecamylamine, methyldopa, or reserpine because their effectiveness may be decreased by AllerTan Suspension

This may not be a complete list of all interactions that may occur. Ask your health care provider if AllerTan Suspension may interact with other medicines that you take. Check with your health care provider before you start, stop, or change the dose of any medicine.


How to use AllerTan Suspension:


Use AllerTan Suspension as directed by your doctor. Check the label on the medicine for exact dosing instructions.


  • AllerTan Suspension may be taken with or without food.

  • Shake well before using.

  • Use a measuring device marked for medicine dosing. Ask your pharmacist for help if you are unsure of how to measure your dose.

  • If you miss a dose of AllerTan Suspension and you are taking it regularly, take it as soon as possible. If it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not take 2 doses at once.

Ask your health care provider any questions you may have about how to use AllerTan Suspension.



Important safety information:


  • AllerTan Suspension may cause dizziness, drowsiness, or blurred vision. These effects may be worse if you take it with alcohol or certain medicines. Use AllerTan Suspension with caution. Do not drive or perform other possibly unsafe tasks until you know how you react to it.

  • Do not drink alcohol or use medicines that may cause drowsiness (eg, sleep aids, muscle relaxers) while you are using AllerTan Suspension; it may add to their effects. Ask your pharmacist if you have questions about which medicines may cause drowsiness.

  • Do not take diet or appetite control medicines while you are taking AllerTan Suspension without checking with your doctor.

  • Some of these products contain phenylalanine. If you must have a diet that is low in phenylalanine, ask your pharmacist if it is in your product.

  • Before you start any new medicine, check the label to see if it has a decongestant or antihistamine in it too. If it does or if you are not sure, check with your doctor or pharmacist.

  • Do NOT take more than the recommended dose or use for longer than prescribed without checking with your doctor.

  • If your symptoms do not get better within 5 to 7 days or if they get worse, check with your doctor.

  • AllerTan Suspension may cause you to become sunburned more easily. Avoid the sun, sunlamps, or tanning booths until you know how you react to AllerTan Suspension. Use a sunscreen or wear protective clothing if you must be outside for more than a short time.

  • AllerTan Suspension may interfere with skin allergy tests. If you are scheduled for a skin test, talk to your doctor. You may need to stop taking AllerTan Suspension for a few days before the tests.

  • Tell your doctor or dentist that you take AllerTan Suspension before you receive any medical or dental care, emergency care, or surgery.

  • Use AllerTan Suspension with caution in the ELDERLY; they may be more sensitive to its effects, especially confusion, dizziness, drowsiness, dry mouth, excitability, low blood pressure, and trouble urinating.

  • Caution is advised when using AllerTan Suspension in CHILDREN; they may be more sensitive to its effects, especially excitability.

  • PREGNANCY and BREAST-FEEDING: If you become pregnant, contact your doctor. You will need to discuss the benefits and risks of using AllerTan Suspension while you are pregnant. AllerTan Suspension may be found in breast milk. Do not breast-feed while taking AllerTan Suspension.


Possible side effects of AllerTan Suspension:


All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome:



Constipation; diarrhea; dizziness; drowsiness; dry mouth, nose, or throat; excitability; headache; loss of appetite; nausea; nervousness or anxiety; trouble sleeping; upset stomach; vomiting; weakness.



Seek medical attention right away if any of these SEVERE side effects occur:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); blurred vision or other vision changes; confusion; difficulty urinating or inability to urinate; fast or irregular heartbeat; fever, chills, or persistent sore throat; hallucinations; mood or mental changes; persistent trouble sleeping; restlessness; seizures; severe dizziness, drowsiness, lightheadedness, or headache; tremor.



This is not a complete list of all side effects that may occur. If you have questions about side effects, contact your health care provider. Call your doctor for medical advice about side effects. To report side effects to the appropriate agency, please read the Guide to Reporting Problems to FDA.


See also: AllerTan side effects (in more detail)


If OVERDOSE is suspected:


Contact 1-800-222-1222 (the American Association of Poison Control Centers), your local poison control center, or emergency room immediately. Symptoms may include blurred vision; confusion; hallucinations; ringing in the ears; seizures; severe dizziness, lightheadedness, or headache; severe drowsiness; unusually fast, slow, or irregular breathing; unusually fast, slow, or irregular heartbeat; vomiting.


Proper storage of AllerTan Suspension:

Store AllerTan Suspension at room temperature, between 59 and 86 degrees F (15 and 30 degrees C). Store away from heat, moisture, and light. Do not store in the bathroom. Keep AllerTan Suspension out of the reach of children and away from pets.


General information:


  • If you have any questions about AllerTan Suspension, please talk with your doctor, pharmacist, or other health care provider.

  • AllerTan Suspension is to be used only by the patient for whom it is prescribed. Do not share it with other people.

  • If your symptoms do not improve or if they become worse, check with your doctor.

  • Check with your pharmacist about how to dispose of unused medicine.

This information is a summary only. It does not contain all information about AllerTan Suspension. If you have questions about the medicine you are taking or would like more information, check with your doctor, pharmacist, or other health care provider.



Issue Date: February 1, 2012

Database Edition 12.1.1.002

Copyright © 2012 Wolters Kluwer Health, Inc.

More AllerTan resources


  • AllerTan Side Effects (in more detail)
  • AllerTan Use in Pregnancy & Breastfeeding
  • AllerTan Drug Interactions
  • AllerTan Support Group
  • 0 Reviews for AllerTan - Add your own review/rating


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  • Cold Symptoms
  • Hay Fever

Thursday, July 26, 2012

Topcare 8 Hour Pain Relief



acetaminophen

Dosage Form: tablet, film coated, extended release
Topco 8 Hour Pain Relief Drug Facts

Active ingredient (in each caplet)


Acetaminophen 650 mg



Purpose


Pain reliever/fever reducer



Uses


  • temporarily relieves minor aches and pains due to:

  • muscular aches

  • backache

  • headache

  • toothache

  • the common cold

  • menstrual cramps

  • minor pain of arthritis

  • temporarily reduces fever


Warnings


Liver warning: This product contains acetaminophen. Severe liver damage may occur if you take


  • more than 6 caplets in 24 hours, which is the maximum daily amount

  • with other drugs containing acetaminophen

  • 3 or more alcoholic drinks every day while using this product


Do not use


  • if you are allergic to acetaminophen

  • with any other drug containing acetaminophen (prescription or nonprescription). If you are not sure whether a drug contains acetaminophen, ask a doctor or pharmacist.


Ask a doctor before use if you have


liver disease.



Ask a doctor or pharmacist before use if you are


taking the blood thinning drug warfarin.



Stop use and ask a doctor if


  • pain gets worse or lasts for more than 10 days

  • fever gets worse or lasts for more than 3 days

  • new symptoms occur

  • redness or swelling is present

These could be signs of a serious condition.



If pregnant or breast-feeding,


ask a health professional before use.



Keep out of reach of children.


Overdose warning: Taking more than the recommended dose (overdose) may cause liver damage. In case of overdose, get medical help or contact a Poison Control Center right away. (1-800-222-1222) Quick medical attention is critical for adults as well as for children even if you do not notice any signs or symptoms.



Directions


  • do not take more than directed (see overdose warning)






adults and children 12 years and over
  • take 2 caplets every 8 hours with water

  • swallow whole – do not crush, chew or dissolve

  • do not take more than 6 caplets in 24 hours

  • do not use for more than 10 days unless directed by a doctor

children under 12 years
  • do not use


Other information


  • store at 20°-25°C (68°-77°F). Avoid excessive heat 40°C (104°F).

  • see end panel for lot number and expiration date


Inactive ingredients


carnauba wax, colloidal silicon dioxide, croscarmellose sodium, FD&C red #40 aluminum lake, hypromellose, magnesium stearate, maltodextrin, microcrystalline cellulose, polyethylene glycol 400, polysorbate 80, povidone, pregelatinized starch, stearic acid, titanium dioxide



Questions or comments?


1-888-423-0139



Principal Display Panel


See New Warnings Information


For up to 8 hour relief of minor muscle aches & pain


8 Hour Pain Relief


Acetaminophen Extended-Release Tablets, 650 mg


Pain Reliever / Fever Reducer


Actual Size


Compare to Tylenol® 8 Hour active ingredient


†Capsule-Shaped Tablets


8 Hour Pain Relief Carton











TOPCARE 8 HOUR PAIN RELIEF 
acetaminophen  tablet, film coated, extended release










Product Information
Product TypeHUMAN OTC DRUGNDC Product Code (Source)36800-217
Route of AdministrationORALDEA Schedule    








Active Ingredient/Active Moiety
Ingredient NameBasis of StrengthStrength
ACETAMINOPHEN (ACETAMINOPHEN)ACETAMINOPHEN650 mg





Inactive Ingredients
Ingredient NameStrength
No Inactive Ingredients Found


















Product Characteristics
ColorREDScoreno score
ShapeCAPSULESize19mm
FlavorImprint CodeL217
Contains      














Packaging
#NDCPackage DescriptionMultilevel Packaging
136800-217-781 BOTTLE In 1 CARTONcontains a BOTTLE
1100 TABLET In 1 BOTTLEThis package is contained within the CARTON (36800-217-78)










Marketing Information
Marketing CategoryApplication Number or Monograph CitationMarketing Start DateMarketing End Date
ANDAANDA07507711/29/2005


Labeler - Topco Associates LLC (006935977)
Revised: 01/2010Topco Associates LLC




More Topcare 8 Hour Pain Relief resources


  • Topcare 8 Hour Pain Relief Side Effects (in more detail)
  • Topcare 8 Hour Pain Relief Dosage
  • Topcare 8 Hour Pain Relief Use in Pregnancy & Breastfeeding
  • Topcare 8 Hour Pain Relief Drug Interactions
  • 0 Reviews for Topcare 8 Hour Pain Relief - Add your own review/rating


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  • Fever
  • Muscle Pain
  • Pain
  • Sciatica

Edrophonium Injection BP 10mg / 1ml (Cambridge Laboratories)






What you should know about Edrophonium Injection BP


This leaflet contains information about Edrophonium Injection BP, which is administered by a doctor or nurse as part of the test you are about to have done. Although you will not be taking this medicine yourself, this leaflet contains important information to help you understand how Edrophonium is used. If there is anything you do not understand, please ask a doctor or nurse.


This leaflet is written for the patient who is to have the test. If you are the parent of a child who is going to have the test, then of course the information should be read as applying to the child.





What does Edrophonium Injection BP contain?


Each ampoule contains 10mg of Edrophonium chloride (the active ingredient) together with some other ingredients which are as follows:


  • Sodium Citrate BP

  • Sodium Sulphite

  • Citric Acid BP

  • Water for Injections BP

Edrophonium Injection BP is supplied in packs of 10 ampoules, each ampoule coded with orange and emerald green colour rings contains 1ml.




What does Edrophonium Injection BP do?


Edrophonium is a diagnostic agent, which means that it is used in tests rather than as a treatment for a disease. The active ingredient of Edrophonium Injection BP is a drug which prevents the action of one of the body's enzymes. The enzyme (known as cholinesterase) destroys a substance (acetylcholine) which is involved with many bodily functions, including the contraction of muscle. By preventing the destruction of acetylcholine, Edrophonium helps the muscles to respond to nerve impulses which tell them to contract.


The holder of the product licence for this medicine is



Cambridge Laboratories Limited

Deltic House

Kingfisher Way

Silverlink Business Park

Wallsend

Tyne & Wear
NE28 9NX


The ampoules are made by



BCM Limited

1 Thane Road

Nottingham

NG2 3AA




What is Edrophonium Injection BP for?


Edrophonium is mainly used in a diagnostic test for the disease known as myasthenia gravis. This is a chronic disease in which the muscles are weak and tire easily because the nerve impulses are not transmitted properly to them.




Before taking your medicine



What should I tell the doctor before the test?


If you have had this test before and experienced an unpleasant reaction, please tell the doctor about this. If you have ever had a reaction to any of the ingredients, tell your doctor. As Edrophonium should not be given to patients with intestinal or urinary obstruction, please tell the doctor if you think you have had a blockage in your gut or in your waterworks.


Please also tell the doctor if you are taking any medication or if you have or have ever had any of the following conditions:


Asthma, any heart problems, low blood pressure, epilepsy, Parkinson's disease or a stomach ulcer.


Edrophonium may interact with certain anaesthetics and drugs used to produce muscle relaxation during surgery. If you are about to have an operation your anaesthetist will be aware of this and will treat you accordingly but please do not hesitate to ask him for further information.


WOMEN: Please let the doctor know if you are pregnant or breastfeeding. Although no harmful effects on the unborn or breast-fed child are known, the doctor may prefer to put off the test until after the baby has been born or weaned.





How is Edrophonium Injection BP used?


Edrophonium is given by injection into a vein or muscle. Sometimes part of the dose is given first and the remainder thirty seconds later. The effect of the injection on muscular strength depends upon the exact purpose of the test. The usual doses are as follows:


  • As a test for myasthenia gravis: 2mg into a vein followed if there has been no response by the remaining 8mg thirty seconds later. Alternatively, the whole 10mg may be injected into a muscle.




  • To tell whether your existing treatment is too weak or too strong: 2mg given one hour after the last dose of a medicine for myasthenia gravis.




  • For diagnosis of prolonged breathing difficulties after certain muscle relaxant drugs: 10mg injected into a vein.




  • To reverse the effects of muscle relaxant drugs: 0.5 - 0.7mg for each kilogram of bodyweight is usually given slowly into a vein, together with another drug called atropine.




  • Children's doses: For diagnostic tests the dose is usually 0.1mg for each kilogram of bodyweight, with one-fifth of the dose being given first and the remainder thirty seconds later if there has been no response. Children are given the same dose as adults for reversal of the effects of muscle relaxant drugs.

If you think you have been given too much medicine, tell your doctor. The likely signs of an overdose are a slow or irregular heartbeat, feeling faint, difficulty in breathing, perspiration, upset stomach and visual disturbances. If you would like any other information about the use of Edrophonium, please ask your doctor or nurse.




Side-effects


It is possible that you (or your child if he or she is having the test) may have nausea and vomiting, increased salivation, diarrhoea and abdominal pains.


If you think that Edrophonium has caused any other side-effect, please tell your doctor or nurse about it.


This medicine should not be used after the expiry date that is shown on the carton. Your doctor should have checked this.


Edrophonium Injection should be protected from light and kept out of the reach of children.


Date of preparation of this leaflet: May 2002






Wednesday, July 25, 2012

Anticholinesterase Overdose Medications


Drugs associated with Anticholinesterase Overdose

The following drugs and medications are in some way related to, or used in the treatment of Anticholinesterase Overdose. This service should be used as a supplement to, and NOT a substitute for, the expertise, skill, knowledge and judgment of healthcare practitioners.





Drug List:

human papillomavirus vaccine, bivalent Intramuscular


HUE-man pap-ah-LOH-mah-VYE-rus ree-KOM-bi-nant VAX-een bye-VAY-lent (types 16, 18)


Commonly used brand name(s)

In the U.S.


  • Cervarix

Available Dosage Forms:


  • Suspension

Therapeutic Class: Vaccine


Uses For human papillomavirus vaccine, bivalent


Human papillomavirus (HPV) recombinant bivalent vaccine is an active immunizing agent (vaccine) that is used to prevent infection caused by human papillomavirus (types 16 and 18). It works by causing your body to produce its own protection (antibodies) against the virus.


HPV infection is usually a sexually transmitted disease (STD) and is easily spread by having sex with an infected person. This vaccine helps prevent cervical cancer and abnormal or precancerous diseases of the cervix in girls and women 9 to 25 years of age. This vaccine will not treat these diseases or protect you against diseases that are caused by other HPV types. The vaccine will also not protect you against other sexually transmitted diseases that are not caused by HPV.


This vaccine is available only with your doctor's prescription.


Before Using human papillomavirus vaccine, bivalent


In deciding to use a vaccine, the risks of taking the vaccine must be weighed against the good it will do. This is a decision you and your doctor will make. For this vaccine, the following should be considered:


Allergies


Tell your doctor if you have ever had any unusual or allergic reaction to human papillomavirus vaccine, bivalent or any other medicines. Also tell your health care professional if you have any other types of allergies, such as to foods, dyes, preservatives, or animals. For non-prescription products, read the label or package ingredients carefully.


Pediatric


Appropriate studies have not been performed on the relationship of age to the effects of human papillomavirus bivalent vaccine in children younger than 9 years of age. Safety and efficacy have not been established.


Geriatric


Appropriate studies on the relationship of age to the effects of human papillomavirus bivalent vaccine have not been performed in the geriatric population. Safety and efficacy have not been established.


Interactions with Medicines


Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. Tell your healthcare professional if you are taking any other prescription or nonprescription (over-the-counter [OTC]) medicine.


Interactions with Food/Tobacco/Alcohol


Certain medicines should not be used at or around the time of eating food or eating certain types of food since interactions may occur. Using alcohol or tobacco with certain medicines may also cause interactions to occur. Discuss with your healthcare professional the use of your medicine with food, alcohol, or tobacco.


Other Medical Problems


The presence of other medical problems may affect the use of this vaccine. Make sure you tell your doctor if you have any other medical problems, especially:


  • Immune deficiency condition, or family history of—This condition may increase the chance and severity of side effects with the vaccine and/or may decrease the useful effects of the vaccine.

  • Severe illness with fever—The symptoms of this condition may be confused with the possible side effects of the vaccine.

Proper Use of human papillomavirus vaccine, bivalent


A nurse or other trained health professional will give you or your child this vaccine. It is given as a shot in the muscle of your upper arm.


To get the best possible protection against infection with the HPV virus, you should complete the vaccine dosing schedule, even if you are not directly exposed to HPV.


This vaccine is usually given as three shots. You will need another dose at 1 month and 6 months after the first dose, unless your doctor tells you otherwise.


human papillomavirus vaccine, bivalent comes with a patient information insert. It is very important that you read and understand this information. Be sure to ask your doctor about anything you do not understand.


Missed Dose


human papillomavirus vaccine, bivalent needs to be given on a fixed schedule. If you miss a dose or forget to use your medicine, call your doctor or pharmacist for instructions.


Precautions While Using human papillomavirus vaccine, bivalent


It is very important that you or your child return to your doctor's office at the right time for all of the doses. Be sure to notify your doctor of any side effects that occur after you or your child receive this vaccine.


This vaccine may cause a serious type of allergic reaction called anaphylaxis. Anaphylaxis can be life-threatening and requires immediate medical attention. Tell your doctor right away if you or your child have a rash, itching, swelling of the tongue and throat, or trouble with breathing after you get the injection.


It is important to tell your doctor if you become pregnant. Your doctor may want you to join a pregnancy registry for patients receiving this vaccine.


This vaccine does not replace your routine cervical cancer screening (pap test). You will need to see your doctor for screening tests even after receiving this vaccine.


You or your child may feel faint, lightheaded, or dizzy right after you receive this vaccine. Sitting or lying down for 15 minutes after you receive the vaccine may also help. If any of these side effects occur, do not drive, use machines, or do anything else that could be dangerous if you are not alert. If this problem continues or gets worse, check with your doctor.


The needle cover of the prefilled syringe contains dry natural rubber (a derivative of latex), which may cause allergic reactions in people who are sensitive to latex. Tell your doctor if you or your child have a latex allergy before you receive this vaccine.


human papillomavirus vaccine, bivalent Side Effects


Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.


Check with your doctor or nurse immediately if any of the following side effects occur:


More common
  • Fever

Less common
  • Bladder pain

  • bloody or cloudy urine

  • body aches or pain

  • change in the color, amount, or odor of vaginal discharge

  • chills

  • cough

  • diarrhea

  • difficult, burning, or painful urination

  • difficulty with breathing

  • ear congestion

  • frequent urge to urinate

  • general feeling of discomfort or illness

  • headache

  • joint pain

  • loss of appetite

  • loss of voice

  • lower back or side pain

  • muscle aches and pains

  • nasal congestion

  • nausea

  • runny nose

  • shivering

  • sneezing

  • sore throat

  • sweating

  • trouble with sleeping

  • unusual tiredness or weakness

  • vomiting

Incidence not known
  • Blistering, peeling, or loosening of the skin

  • difficulty with swallowing

  • dizziness

  • fainting

  • fast heartbeat

  • hives

  • itching

  • joint or muscle pain

  • large, hive-like swelling on the face, eyelids, lips, tongue, throat, hands, legs, feet, or sex organs

  • puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue

  • red, irritated eyes

  • shortness of breath

  • skin rash

  • sores, ulcers, or white spots in the mouth or on the lips

  • tightness in the chest

  • wheezing

Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:


More common
  • Abdominal or stomach cramps, discomfort, or pain

  • back pain

  • constipation

  • difficulty with moving

  • hives or welts

  • indigestion

  • red streaks on the skin

  • redness of the skin

  • swelling, tenderness, or pain at the injection site

  • swollen joints

  • swollen mouth and tongue

  • unpleasant taste

  • urge to have bowel movement

Less common
  • Congestion

  • heavy bleeding

  • hoarseness

  • pain

  • stuffy or runny nose

  • tender, swollen glands in the neck

  • trouble with swallowing

  • voice changes

Rare
  • Changes in menstrual periods

  • decreased sexual ability in males

  • depressed mood

  • dry skin and hair

  • dry, puffy skin

  • feeling cold

  • hair loss

  • nervousness

  • rectal bleeding

  • red, scaling, or crusted skin

  • sensitivity to heat

  • severe abdominal or stomach pain

  • severe diarrhea

  • slowed heartbeat

  • sweating

  • swelling of the front part of the neck

  • weight gain

  • weight loss

Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.


Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.

See also: human papillomavirus vaccine, bivalent Intramuscular side effects (in more detail)



The information contained in the Thomson Reuters Micromedex products as delivered by Drugs.com is intended as an educational aid only. It is not intended as medical advice for individual conditions or treatment. It is not a substitute for a medical exam, nor does it replace the need for services provided by medical professionals. Talk to your doctor, nurse or pharmacist before taking any prescription or over the counter drugs (including any herbal medicines or supplements) or following any treatment or regimen. Only your doctor, nurse, or pharmacist can provide you with advice on what is safe and effective for you.


The use of the Thomson Reuters Healthcare products is at your sole risk. These products are provided "AS IS" and "as available" for use, without warranties of any kind, either express or implied. Thomson Reuters Healthcare and Drugs.com make no representation or warranty as to the accuracy, reliability, timeliness, usefulness or completeness of any of the information contained in the products. Additionally, THOMSON REUTERS HEALTHCARE MAKES NO REPRESENTATION OR WARRANTIES AS TO THE OPINIONS OR OTHER SERVICE OR DATA YOU MAY ACCESS, DOWNLOAD OR USE AS A RESULT OF USE OF THE THOMSON REUTERS HEALTHCARE PRODUCTS. ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE OR USE ARE HEREBY EXCLUDED. Thomson Reuters Healthcare does not assume any responsibility or risk for your use of the Thomson Reuters Healthcare products.


More human papillomavirus vaccine, bivalent Intramuscular resources


  • Human papillomavirus vaccine, bivalent Intramuscular Side Effects (in more detail)
  • Human papillomavirus vaccine, bivalent Intramuscular Use in Pregnancy & Breastfeeding
  • Human papillomavirus vaccine, bivalent Intramuscular Drug Interactions
  • Human papillomavirus vaccine, bivalent Intramuscular Support Group
  • 13 Reviews for Human papillomavirus vaccine, bivalent Intramuscular - Add your own review/rating


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  • Human Papillomavirus Prophylaxis

Tuesday, July 24, 2012

Veregen topical


Generic Name: sinecatechins (topical) (SYNE e KAT e kins TOP i kal)

Brand Names: Veregen


What is kunecatechins?

Kunecatechins is an herbal product made from green tea leaves.


Kunecatechins is used to treat external (on the outside of the body) genital and anal warts in adult patients.


Kunecatechins will not cure genital or anal warts, and will not keep you from spreading the warts to other people through sexual intercourse or skin-to-skin contact. Kunecatechins will not treat genital warts that are caused by the human papilloma virus (HPV).

Kunecatechins may also be used for purposes other than those listed in this medication guide.


What is the most important information I should know about kunecatechins?


Before using kunecatechins, tell your doctor if you have human papilloma virus (HPV), HIV or AIDS, or a weak immune system (from disease or medications such as steroids, chemotherapy, or radiation treatments).


Kunecatechins will not cure genital or anal warts, and will not keep you from spreading the warts to other people through sexual intercourse or skin-to-skin contact. Kunecatechins will not treat genital warts that are caused by the human papilloma virus (HPV).

Keep using kunecatechins until your warts have completely cleared. Do not use this medication for longer than 16 weeks without your doctor's advice.


Call your doctor if your warts do not clear up, or if they go away and then come back after treatment.

Talk with your doctor about safe methods of preventing transmission of genital warts during sex.


What should I discuss with my health care provider before taking kunecatechins?


Using this medication will not prevent you from passing genital warts to another person during skin-to-skin contact or sexual intercourse. Talk with your doctor about safe methods of preventing transmission of genital warts during sex.


Do not use this medication if you are allergic to green tea.

Before using kunecatechins, tell your doctor if you are allergic to any drugs, or if you have:



  • human papilloma virus (HPV);




  • HIV or AIDS; or




  • a weak immune system (from disease or medications such as steroids, chemotherapy, or radiation treatments).



If you have any of these conditions, you may not be able to use kunecatechins, or you may need a dosage adjustment or special tests during treatment.


FDA pregnancy category C. This medication may be harmful to an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant during treatment. It is not known whether kunecatechins passes into breast milk or if it could harm a nursing baby. Do not use this medication without telling your doctor if you are breast-feeding a baby.

How should I take kunecatechins?


Use this medication exactly as it was prescribed for you. Do not use the medication in larger amounts, or use it for longer than recommended by your doctor. Follow the instructions on your prescription label.


This medication comes with patient instructions for safe and effective use. Follow these directions carefully. Ask your doctor or pharmacist if you have any questions.


Wash your hands before and after applying this medicine.

Kunecatechins is usually applied 3 times daily. Apply enough ointment to cover each wart, leaving a thin layer of ointment on the skin surface.


Do not wash the treated skin area just after applying this medication. Reapply the ointment after you swim, bathe, or shower.


Women using this medication should wash the ointment off before inserting a tampon into the vagina. You may accidentally get some of the medicine into your vagina if you insert a tampon while the ointment is on the outside of your vagina. Men using this medication on an uncircumcised penis should wash underneath the foreskin each day.

Keep using kunecatechins until your warts have completely cleared. Do not use this medication for longer than 16 weeks without your doctor's advice.


Call your doctor if your warts do not clear up, or if they go away and then come back after treatment.

Kunecatechins ointment can stain clothing or bed sheets. Avoid getting the medicine on these surfaces. You may want to wear dark-colored clothing to prevent unwanted staining. Do not use a sanitary napkin or other protective barrier without your doctor's advice.


Store this medication in the refrigerator and do not allow it to freeze.

What happens if I miss a dose?


Use the medication as soon as you remember the missed dose. If it is almost time for your next dose, skip the missed dose and use the medicine at your next regularly scheduled time. Do not use extra medicine to make up the missed dose.


What happens if I overdose?


Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

An overdose of applied kunecatechins applied to the skin is not expected to produce life-threatening symptoms.


What should I avoid while taking kunecatechins?


Avoid sexual intercourse while you have this medication on your skin. Wash the ointment off before having intercourse, even if you are using a condom. Kunecatechins can weaken the latex in a rubber condom, and an unintended pregnancy could occur.


Avoid touching the treated skin areas, or allowing another person to touch your treated skin after you have applied the ointment.


Kunecatechins is for use only on the outside of the body. Avoid getting this medication in your eyes, nose, or mouth or into your rectum, vagina, or the opening to your bladder.

Do not apply this medication to an open wound or broken skin.


Avoid exposing treated skin to sunlight or artificial UV rays (sunlamps or tanning beds).

Kunecatechins side effects


Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat. Wash off the ointment with mild soap and water and call your doctor at once if you have any of these serious side effects:

  • severe redness, burning, or itching of treated skin;




  • swelling, blisters, sores, or skin changes where the medicine was applied;




  • hardening of the treated skin areas; or




  • bleeding of treated skin.



Less serious side effects may include mild stinging, itching, or irritation.


This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.


What other drugs will affect kunecatechins?


Before using kunecatechins, tell your doctor about all other genital wart treatments you have used or are still using.


There may be other drugs that can affect kunecatechins. Tell your doctor about all the prescription and over-the-counter medications you use. This includes vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start using a new medication without telling your doctor.



More Veregen resources


  • Veregen Side Effects (in more detail)
  • Veregen Use in Pregnancy & Breastfeeding
  • Veregen Support Group
  • 0 Reviews for Veregen - Add your own review/rating


Compare Veregen with other medications


  • Condylomata Acuminata


Where can I get more information?


  • Your pharmacist has information about kunecatechins written for health professionals that you may read.

See also: Veregen side effects (in more detail)


Monday, July 23, 2012

Trezix




Generic Name: acetaminophen, caffeine, dihydrocodeine bitartrate

Dosage Form: capsule
Trezix™ Capsules

Acetaminophen, Caffeine and Dihydrocodeine Bitartrate           CIII


320.5 mg / 30 mg / 16 mg

Rx Only



Hepatotoxicity

Acetaminophen has been associated with cases of acute liver failure, at times resulting in liver transplant and death.  Most of the cases of liver injury are associated with the use of acetaminophen at doses that exceed 4000 milligrams per day, and often involve more than one acetaminophen containing product.

DESCRIPTION:

Trezix™ capsules are supplied in capsule form for oral administration.

Each red capsule contains:

Acetaminophen...........................................320.5 mg

Caffeine ..........................................................30 mg

Dihydrocodeine* bitartrate .............................16 mg


*Warning: may be habit-forming.


Acetaminophen (4'-hydroxyacetanilide), a slightly bitter, white, odorless, crystalline powder, is a non-opiate, non-salicylate analgesic and antipyretic. It has the following structural formula:




Caffeine (1,3,7-trimethylxanthine), a bitter, white crystalline powder or white glistening needles, is a central nervous system stimulant. It has the following structural formula:




Dihydrocodeine Bitartrate (4,5 _-epoxy-3-methoxy-17-methylmorphinan-6 _-ol (+)-tartrate), an odorless, fine white powder is an opioid analgesic. It has the following structural formula:




In addition, each capsule contains the following inactive ingredients: crospovidone, magnesium stearate, povidone, pregelatinized starch, stearic acid. The capsule is composed of FD&C Red #40, and gelatin. Imprinting ink is composed of ammonium hydroxide, isopropyl alcohol, n-butyl alcohol, pharmaceutical glaze (modified) in SD-45, propylene glycol, simethicone, and titanium dioxide.
CLINICAL PHARMACOLOGY:

Trezix™ capsules contain dihydrocodeine which is a semi-synthetic narcotic analgesic related to codeine, with multiple actions qualitatively similar to those of codeine; the most prominent of these involve the central nervous system and organs with smooth muscle components. The principal action of therapeutic value is analgesia.

This combination product also contains acetaminophen, a non-opiate, non-salicylate analgesic and antipyretic. This combination product contains caffeine as an analgesic adjuvant. Caffeine is also a CNS and cardiovascular stimulant.
INDICATIONS AND USAGE:

Trezix™ capsules are indicated for the relief of moderate to moderately severe pain.
CONTRAINDICATIONS:

This combination product is contraindicated in patients with hypersensitivity to dihydrocodeine, codeine, acetaminophen, caffeine, or any of the inactive components listed above, or any situation where opioids are contraindicated including significant respiratory depression (in unmonitored settings or in the absence of resuscitative equipment), acute or severe bronchial asthma or hypercapnia, and paralytic ileus.
WARNINGS:

Hepatotoxicity:

Acetaminophen has been associated with cases of acute liver failure, at times resulting in liver transplant and death.  Most of the cases of liver injury are associated with the use of acetaminophen at doses that exceed 4000 milligrams per day, and often involve more than one acetaminophen containing product. The excessive intake of acetaminophen may be intentional to cause self-harm or unintentional as patients attempt to obtain more pain relief or unknowingly take other acetaminophen-containing products.


The risk of acute liver failure is higher in individuals with underlying liver disease and in individuals who ingest alcohol while taking acetaminophen.


Instruct patients to look for acetaminophen or APAP on package labels and not to use more than one product that contains acetaminophen. Instruct patients to seek medical attention immediately upon ingestion of more than 4000 milligrams of acetaminophen per day, even if they feel well.


Hypersensitivity/Anaphylaxis:

There have been post-marketing reports of hypersensitivity and anaphylaxis associated with use of acetaminophen.  Clinical signs included swelling of the face, mouth, and throat, respiratory distress, urticarial, rash, pruritus, and vomiting.  There were infrequent reports of life-threatening anaphylaxis requiring emergency medical attention.  Instruct patients to discontinue Trezix™ immediately and seek medical care if they experience these symptoms.  Do not prescribe Trezix™ for patients with acetaminophen allergy.


Usage in Ambulatory Patients:

Dihydrocodeine may impair the mental and/or physical abilities required for the performance of potentially hazardous tasks such as driving a car or operating machinery.


Respiratory Depression:

Respiratory depression is the most dangerous acute reaction produced by opioid agonist preparations, although it is rarely severe with usual doses. Opioids decrease the respiratory rate, tidal volume, minute ventilation, and sensitivity to carbon dioxide. Respiratory depression occurs most frequently in elderly or debilitated patients, usually after large initial doses in nontolerant patients, or when opioids are given in conjunction with other agents that depress respiration. This combination product should be used with caution in patients with significant chronic obstructive pulmonary disease or cor pulmonale and in patients with a substantially decreased respiratory reserve, hypoxia hypercapnia, or respiratory depression. In such patients, alternative non-opioid analgesics should be considered, and opioids should be administered only under careful medical supervision at the lowest effective dose.


Head Injury:

This combination product should be used cautiously in the presence of head injury or increased intracranial pressure. The effects of opioids on pupillary response and consciousness may obscure neurologic signs of increases in intracranial pressure in patients with head injuries. The respiratory depressant effects including carbon dioxide retention and secondary elevation of cerebrospinal fluid pressure may be markedly exaggerated in the presence of head injury, intracranial lesions, or other causes of increased intracranial pressures.


Hypotensive Effect:

Dihydrocodeine, like all opioid analgesics, may cause hypotension in patients whose ability to maintain blood pressure has been compromised by a depleted blood volume or who receive concurrent therapy with drugs such as phenothiazines or other agents which compromise vasomotor tone. Acetaminophen, caffeine and dihydrocodeine bitartrate capsules may produce orthostatic hypotension in ambulatory patients. This combination product should be administered with caution to patients in circulatory shock, since vasodilation produced by the drug may further reduce cardiac output and blood pressure.



Drug Dependence:

Dihydrocodeine can produce drug dependence of the codeine type and has the potential of being abused (See DRUG ABUSE AND DEPENDENCE).
PRECAUTIONS:

General:

Selection of patients for treatment with Trezix™ capsules should be governed by the same principles that apply to the use of similar opioid/non-opioid fixed combination analgesics. As with any such opioid analgesic, the dosing regimen should be adjusted for each patient (See DOSAGE AND ADMINISTRATION). This combination product should be used with caution in elderly or debilitated patients or those with any of the following conditions: acute alcoholism; adrenocortical insufficiency (e.g., Addison's disease); asthma; central nervous system depression or coma; chronic obstructive pulmonary disease; decreased respiratory reserve (including emphysema, severe obesity, cor pulmonale, or kyphoscoliosis); delirium tremens; head injury; hypotension; increased intracranial pressure; myxedema or hypothyroidism; prostatic hypertrophy or urethral stricture; and toxic psychosis. The benefits and risks of using opioids in patients taking monoamine oxidase inhibitors and in those with a history of drug abuse should be carefully considered. The administration of an analgesic containing an opioid may obscure the diagnosis or clinical course in patients with acute abdominal conditions. This combination product may aggravate convulsions in patients with convulsive disorders and, like all opioids, may induce or aggravate seizures in some clinical settings.

Acetaminophen is relatively non-toxic at therapeutic doses, but should be used with caution in patients with severe renal or hepatic disease. Care should be observed when using large doses of acetaminophen in malnourished patients or those with a history of chronic alcohol abuse because they may be more susceptible to hepatic damage similar to that observed with toxic overdosage. Caffeine in high doses may produce central nervous system and cardiovascular stimulation and gastrointestinal irritation.
Drug Interactions:

Dihydrocodeine with Other Central Nervous System Depressants:

Patients receiving other opioid analgesics, sedatives or hypnotics, muscle relaxants, general anesthetics, centrally acting anti-emetics, phenothiazines or other tranquilizers, or alcohol concomitantly with this combination product may exhibit additive depressant effects on the central nervous system. When such combined therapy is contemplated, the dose of one or both agents should be reduced.


Dihydrocodeine with Monoamine Oxidase Inhibitors:

Dihydrocodeine, like all opioid analgesics, interacts with monoamine oxidase inhibitors causing central nervous system excitation and hypertension.


Dihydrocodeine with Mixed Agonist/Antagonist Opioid Analgesics:

Agonist/antagonist analgesics (i.e., pentazocine, nalbuphine, butorphanol and buprenorphine) may reduce the analgesic effect of this combination product.


Acetaminophen Drug Interactions:

Chronic and excessive consumption of alcohol may increase the hepatotoxic risk of acetaminophen. The potential for hepatotoxicity with acetaminophen also may be increased in patients receiving anticonvulsants that induce hepatic microsomal enzymes (including phenytoin, barbiturates, and carbamazepine) or isoniazide. Chronic ingestion of large doses of acetaminophen may slightly potentiate the effects of warfarin-

and indandione- derivative anticoagulants. Severe hypothermia is possible in patients receiving acetaminophen concomitantly with phenothiazines.


Caffeine Drug Interactions:

Caffeine may enhance the cardiac inotropic effects of beta-adrenergic stimulating agents. Co-administration of caffeine and disulfiram may lead to a substantial decrease in caffeine clearance. Caffeine may increase the metabolism of other drugs such as phenobarbital and aspirin. Caffeine accumulation may occur when products or foods containing caffeine are consumed concomitantly with quinolones such as ciprofloxacin.
Information for Patients/Caregivers:

Patients receiving Trezix™ capsules should be given the following information:

1. Do not take Trezix™ if you are allergic to any of its ingredients.

2. If you develop signs of allergy such as a rash or difficulty breathing stop taking Trezix™ and contact your healthcare provider immediately.

3. Do not take more than 4000 milligrams of acetaminophen per day.  Call your doctor if you took more than the recommended dose.

4. Patients should be advised that Trezix™ capsules may impair the mental or physical abilities required for the performance of potentially hazardous tasks such as driving a car or operating machinery.

5. Patients should be advised to report adverse experiences occurring during therapy.

6. Patients should be advised not to adjust the dose of Trezix™ capsules without consulting the prescribing professional.

7. Patients should not combine Trezix™ capsules with alcohol or other central nervous system depressants (sleep aids, tranquilizers) except by the orders of the prescribing physician, because additive effects may occur.

8. Women of childbearing potential who become, or are planning to become, pregnant should be advised to consult their physician regarding the effects of analgesics and other drug use during pregnancy on themselves and their unborn child.

9. Patients should be advised that Trezix™ capsules are a potential drug of abuse. They should protect it from theft, and it should never be given to anyone other than the individual for whom it was prescribed.
Pregnancy:

Teratogenic Effects – Pregnancy Category C. Animal reproduction studies have not been conducted with Trezix™ capsules. It is also not known whether this combination product can cause fetal harm when administered to pregnant women or can affect reproduction capacity in males and females. This combination product should be given to pregnant women only if clearly needed, especially during the first trimester.
Labor and Delivery:

Trezix™ capsules are not recommended for use by women during and immediately before labor and delivery because oral opioids may cause respiratory depression in the newborn.
Nursing Mothers:

Dihydrocodeine bitartrate, acetaminophen and caffeine are excreted in breast milk in small amounts, but the significance of their effects on nursing infants is not known. Because of the potential for serious adverse reactions in nursing infants from this combination product, a decision should be made whether to discontinue the drug, taking into account the importance of the drug to the mother.
Pediatric Use:

Safety and effectiveness of Trezix™ capsules in pediatric patients have not been established.

Geriatric Use:

Trezix™ capsules should be given with caution to the elderly.



Hepatic Impairment:

Trezix™ capsules should be given with caution to patients with hepatic insufficiency. Since dihydrocodeine is metabolized by the liver and since acetaminophen potentially causes hepatotoxicity, the effects of this combination product should be monitored closely in such patients.



Renal Impairment:

Trezix™ capsules should be used with caution and at reduced dosage in the presence of impaired renal function.


Pancreatic/Biliary Tract Disease:

Opioids may cause spasms of the sphincter of Oddi and should be used with caution in patients with biliary tract disease including pancreatitis.
ADVERSE REACTIONS:

Dihydrocodeine:

The most frequently observed adverse reactions include light-headedness, dizziness, drowsiness, headache, fatigue, sedation, sweating, nausea, vomiting, constipation, pruritus, and skin reactions. With the exception of constipation, tolerance develops to most of these effects. Other reactions that have been observed with dihydrocodeine or other opioids include respiratory depression, orthostatic hypotension, cough suppression, confusion, diarrhea, miosis, abdominal pain, dry mouth, indigestion, anorexia, spasm of biliary tract, and urinary retention. Physical and psychological dependence are possibilities. Hypersensitivity reactions (including anaphylactoid reactions), hallucinations, vivid dreams, granulomatous interstitial nephritis, severe narcosis and acute renal failure have been reported rarely during dihydrocodeine administration.


Acetaminophen:

Acetaminophen in therapeutic doses rarely causes adverse reactions. The most serious adverse reaction is hepatoxicity from overdosage (see OVERDOSAGE). Thrombocytopenia, leukopenia, pancytopenia, neutropenia, thrombocytopenic purpura, and agranulocytosis have been reported in patients receiving acetaminophen or p-aminophenol derivatives. Hypersensitivity reactions including urticarial or erythematous skin reactions, laryngeal edema, angioedema, or anaphylactoid reactions are rare.


Caffeine:

Adverse reactions associated with caffeine use include anxiety, anxiety neurosis, excitement, headaches, insomnia, irritability, lightheadedness, restlessness, tenseness, tremor, extrasystoles, palpitations, tachycardia, diarrhea, nausea, stomach pain, vomiting, diuresis, urticaria, scintillating scotoma, and tinnitus.
DRUG ABUSE AND DEPENDENCE:

This combination product is subject to the provisions of the Controlled Substance Act and has been placed in Schedule III.

Dihydrocodeine can produce drug dependence of the codeine type and therefore has the potential of being abused. Like other opioid analgesics, dihydrocodeine may produce subjected effects other than analgesia (e.g., euphoria, relaxation), which may contribute to abuse by some patients. Psychological dependence, physical dependence, and tolerance may develop upon repeated administration of dihydrocodeine, and it should be prescribed and administered with the same degree of caution appropriate to the use of other oral opioid analgesic medications. Symptoms of dihydrocodeine withdrawal consist of irritability, restlessness, insomnia, diaphoresis, anxiety and palpitations. Prolonged, high intake of caffeine may produce tolerance and habituation. Physical signs of withdrawal, such as headaches, irritation, nervousness, anxiety, and dizziness may occur upon abrupt discontinuation.
OVERDOSAGE:

Following an acute overdosage with Trezix™ capsules, toxicity may result from the dihydrocodeine or the acetaminophen. Toxicity due to the caffeine component is less likely, due to the relatively small amounts in this formulation. An overdose is a potentially lethal polydrug overdose situation, and consultation with a regional Poison Control Center is recommended. A listing of the poison control centers can be found in standard references such as the Physician's Desk Reference®.


Signs and Symptoms: Toxicity from dihydrocodeine poisoning include the opioid triad of: pinpoint pupils, respiratory depression, and loss of consciousness. Convulsions, cardiovascular collapse, and death may occur. A single case of acute rhabdomyolysis associated with an overdose of dihydrocodeine has been reported.


In acetaminophen overdosage: dose-dependent potentially fatal hepatic necrosis is the most serious adverse effect. Renal tubular necrosis, hypoglycemic coma, and coagulation defects may also occur. Early symptoms following a potentially hepatotoxic overdose may include: nausea, vomiting, diaphoresis, and general malaise. Clinical and laboratory evidence of hepatic toxicity may not be apparent until 48 to 72 hours post ingestion. Acute caffeine poisoning may cause insomnia, restlessness, tremor, delirium, tachycardia, and extrasystoles.


Because overdose information on this combination product is limited, it is unclear which of the signs and symptoms of toxicity would manifest in any particular overdose situation.


Treatment

A single or multiple drug overdose with Trezix™ capsules is a potentially lethal polydrug overdose, and consultation with a regional Poison Control Center is recommended.  Immediate treatment includes support of cardiorespiratory function and measures to reduce drug absorption.


Oxygen, intravenous fluids, and vasopressors, and other supportive measures should be employed as indicated. Assisted or controlled ventilation should also be considered. For respiratory depression due to overdosage or unusual sensitivity to dihydrocodeine, parenteral naloxone is a specific and effective antagonist.


Gastric decontamination with activated charcoal should be administered just prior to N-acetylcysteine (NAC) to decrease systemic absorption if acetaminophen ingestion is known or suspected to have occurred within a few hours of presentation.  Serum acetaminophen levels should be obtained immediately if the patient presents 4 hours or more after ingestion to assess potential risk of hepatotoxicity; acetaminophen levels drawn less than 4 hours post-ingestion may be misleading.  To obtain the best possible outcome, NAC should be administered as soon as possible where impending or evolving liver injury is suspected.  Intravenous NAC may be administered when circumstances preclude oral administration.


Vigorous supportive therapy is required in severe intoxication.  Procedures to limit the continuing absorption of the drug must be readily performed since the hepatic injury is dose dependent and occurs early in the course of intoxication.
DOSAGE AND ADMINISTRATION:

The usual adult dosage is two (2) Trezix™ capsules orally every four (4) hours, as needed. Dosage should be adjusted according to the severity of the pain and the response of the patient. No more than two (2) capsules should be taken in a 4-hour period. No more than five (5) doses, or ten (10) capsules should be taken in a 24-hour period.
HOW SUPPLIED:

Trezix™ capsules, containing acetaminophen 320.5 mg, caffeine 30 mg and dihydrocodeine* bitartrate 16 mg (*Warning: May be habit-forming), are supplied in bottles of 100 capsules (NDC #66992-340-10).

Also, Trezix™ is supplied in single-capsule sample blister packs (NDC #66992-340-01).

Capsules are imprinted “Trezix” on the red cap in white ink.


Store at 20°C to 25°C (68°F to 77°F). [see USP Controlled Room Temperature].


Dispense in a tight, light-resistant container with a child-resistant closure. Protect from moisture.


Rx Only


Manufactured for:

WraSer Pharmaceuticals LLC

Ridgeland, MS 39157


13001 Rev. May 2011


Physician’s Desk Reference® is the registered trademark of Thomson Healthcare, Inc.

WraSerTM

PHARMACEUTICALS


NDC 66992-340-10


Trezix® CIII


(acetaminophen, caffeine and dihydrocodeine*

bitartrate capsules 320.5mg/30mg/16mg)


Hepatotoxicity

Acetaminophen has been associated with cases of acute liver

failure, at times resulting in liver transplant and death. Most of

the cases of liver injury are associated with the use of acetaminophen

at doses that exceed 4000 milligrams per day, and often

involve more than one acetaminophen containing product.


Rx ONLY


*WARNING: May be habit-forming.


100 CAPSULES










Trezix 
acetaminophen, caffeine, dihydrocodeine bitartrate  capsule










Product Information
Product TypeHUMAN PRESCRIPTION DRUGNDC Product Code (Source)66992-340
Route of AdministrationORALDEA ScheduleCIII    














Active Ingredient/Active Moiety
Ingredient NameBasis of StrengthStrength
ACETAMINOPHEN (ACETAMINOPHEN)ACETAMINOPHEN320.5 mg
CAFFEINE (CAFFEINE)CAFFEINE30 mg
DIHYDROCODEINE BITARTRATE (DIHYDROCODEINE)DIHYDROCODEINE BITARTRATE16 mg














Inactive Ingredients
Ingredient NameStrength
CROSPOVIDONE 
MAGNESIUM STEARATE 
POVIDONE 
STARCH, CORN 
STEARIC ACID 


















Product Characteristics
ColorredScoreno score
ShapeCAPSULESize20mm
FlavorImprint CodeTrezix
Contains      










Packaging
#NDCPackage DescriptionMultilevel Packaging
166992-340-10100 CAPSULE In 1 BOTTLENone










Marketing Information
Marketing CategoryApplication Number or Monograph CitationMarketing Start DateMarketing End Date
ANDAANDA04068809/01/2009


Labeler - WraSer LLC (121828334)
Revised: 07/2011WraSer LLC




More Trezix resources


  • Trezix Side Effects (in more detail)
  • Trezix Dosage
  • Trezix Use in Pregnancy & Breastfeeding
  • Trezix Drug Interactions
  • Trezix Support Group
  • 2 Reviews for Trezix - Add your own review/rating


  • Trezix Concise Consumer Information (Cerner Multum)

  • Trezix MedFacts Consumer Leaflet (Wolters Kluwer)



Compare Trezix with other medications


  • Pain

Methotrexate 10 mg Tablets (Hospira UK Ltd)





1. Name Of The Medicinal Product



Methotrexate 10 mg Tablets


2. Qualitative And Quantitative Composition



Methotrexate 10 mg per tablet.



For excipients see 6.1.



3. Pharmaceutical Form



Tablet for oral administration.



4. Clinical Particulars



4.1 Therapeutic Indications



Methotrexate is indicated in the treatment of neoplastic disease, such as trophoblastic neoplasms and leukaemia and in the control of severe recalcitrant psoriasis which is not responsive to other forms of therapy.



4.2 Posology And Method Of Administration



Adults and Children



Antineoplastic Chemotherapy



Methotrexate is active orally and parenterally. Methotrexate Injection B.P. may be given by the intramuscular, intravenous, intra-arterial or intrathecal routes. Dosage is related to the patient's body weight or surface area. Methotrexate has been used with beneficial effect in a wide variety of neoplastic diseases, alone and in combination with other cytotoxic agents.



Choriocarcinoma and Similar Trophoblastic Diseases



Methotrexate is administered orally or intramuscularly in doses of 15-30 mg daily for a 5-day course. Such courses may be repeated 3-5 times as required, with rest periods of one or more weeks interposed between courses until any manifesting toxic symptoms subside.



The effectiveness of therapy can be evaluated by 24 hour quantitative analysis of urinary chorionic gonadotrophin hormone (HCG). Combination therapy with other cytotoxic drugs, has also been reported as useful.



Hydatidiform mole may precede or be followed by choriocarcinoma, and methotrexate has been used in similar doses for the treatment of hydatidiform mole and chorioadenoma destruens.



Breast Carcinoma



Prolonged cyclic combination with Cyclophosphamide, methotrexate and Fluorouracil has given good results when used as adjuvant treatment to radical mastectomy in primary breast cancer with positive axillary lymph nodes. Methotrexate dosage was 40 mg/m2 intravenously on the first and eighth days.



Leukaemia



Acute granulocytic leukaemia is rare in children but common in adults and this form of leukaemia responds poorly to chemotherapy.



Methotrexate is not generally a drug of choice for induction of remission of lymphoblastic leukaemia. Oral methotrexate 3.3 mg/m2 daily, and Prednisolone 40-60 mg/m2 daily for 4-6 weeks has been used. After a remission is attained, methotrexate in a maintenance dosage of 20-30 mg/m2 orally or by I.M. injection has been administered twice weekly. Twice weekly doses appear to be more effective than daily drug administration. Alternatively, 2.5 mg/kg has been administered I.V. every 14 days.



Meningeal Leukaemia



Some patients with leukaemia are subject to leukaemic invasions of the central nervous system and the CSF should be examined in all leukaemia patients.



Passage of methotrexate from blood to the cerebrospinal fluid is minimal and for adequate therapy the drug should be administered intrathecally. Methotrexate may be given in a prophylactic regimen in all cases of lymphocytic leukaemia. Methotrexate is administered by intrathecal injection in doses of 200-500 microgram/kg body weight. The administration is at intervals of 2 to 5 days and is usually repeated until the cell count of cerebrospinal fluid returns to normal. At this point one additional dose is advised. Alternatively, methotrexate 12 mg/m2 can be given once weekly for 2 weeks, and then once monthly. Large doses may cause convulsions and untoward side effects may occur as with any intrathecal injection, and are commonly neurological in character.



Lymphomas



In Burkitt's Tumour, stages 1-2, methotrexate has prolonged remissions in some cases. Recommended dosage is 10-25 mg per day orally for 4 to 8 days. In stage 3, methotrexate is commonly given concomitantly with other antitumour agents. Treatment in all stages usually consists of several courses of the drug interposed with 7 to 10 day rest periods, and in stage 3 they respond to combined drug therapy with methotrexate given in doses of 0.625 mg to 2.5 mg/kg daily. Hodgkin's Disease responds poorly to methotrexate and to most types of chemotherapy.



Mycosis Fungoides



Therapy with methotrexate appears to produce clinical remissions in one half of the cases treated. Recommended dosage is usually 2.5 to 10 mg daily by mouth for weeks or months and dosage should be adjusted according to the patient's response and haematological monitoring. Methotrexate has also been given intramuscularly in doses of 50 mg once weekly or 25 mg twice weekly.



Psoriasis Chemotherapy



Cases of severe uncontrolled psoriasis, unresponsive to conventional therapy, have responded to weekly single, oral, I.M. or I.V. doses of 10-25 mg per week, adjusted according to the patient's response. An initial test dose one week prior to initiation of therapy is recommended to detect any idiosyncrasy. A suggested dose range is 5-10 mg.



An alternative dosage schedule consists of 2.5 to 5 mg of methotrexate administered orally at 12 hour intervals for 3 doses each week or at 8-hour intervals for 4 doses each week; weekly dosages should not exceed 30 mg.



A daily oral dosage schedule of 2 to 5 mg administered orally for 5 days followed by a rest period of at least 2 days may also be used. The daily dose should not exceed 6.25 mg.



The patient should be fully informed of the risks involved and the clinician should pay particular attention to the appearance of liver toxicity by carrying out liver function tests before starting methotrexate treatment, and repeating these at 2 to 4 month intervals during therapy. The aim of therapy should be to reduce the dose to the lowest possible level with the longest possible rest period. The use of methotrexate may permit the return to conventional topical therapy which should be encouraged.



4.3 Contraindications



Significantly impaired renal function.



Significantly impaired hepatic function



Pre-existing blood dyscrasias, such as significant marrow hypoplasia, leukopenia, thrombocytopenia or anaemia.



Methotrexate is contraindicated in pregnancy.



Due to the potential for serious adverse reactions from methotrexate in breast fed infants, breast feeding is contra-indicated in women taking methotrexate.



Patients with a known allergic hypersensitivity to methotrexate should not receive methotrexate.



4.4 Special Warnings And Precautions For Use



Warnings



Methotrexate must be used only by physicians experienced in antimetabolite chemotherapy.



Concomittant administration of hepatotoxic or haematotoxic DMARDs (e.g. leflunomide) is not advisable.



Due to the possibility of fatal or severe toxic reactions, the patient should be fully informed by the physician of the risks involved and be under his constant supervision.



Acute or chronic interstitial pneumonitis, often associated with blood eosinophilia, may occur and deaths have been reported. Symptoms typically include dyspnoea, cough (especially a dry non-productive cough) and fever for which patients should be monitored at each follow-up visit. Patients should be informed of the risk of pneumonitis and advised to contact their doctor immediately should they develop persistent cough or dyspnoea.



Methotrexate should be withdrawn from patients with pulmonary symptoms and a thorough investigation should be made to exclude infection. If methotrexate induced lung disease is suspected treatment with corticosteroids should be initiated and treatment with methotrexate should not be restarted.



The carton and bottle label will state: “Check dose and frequency – methotrexate is usually taken once a week.”



Deaths have been reported with the use of methotrexate in the treatment of psoriasis.



In the treatment of psoriasis, methotrexate should be restricted to severe recalcitrant, disabling psoriasis which is not adequately responsive to other forms of therapy, but only when the diagnosis has been established by biopsy and/or after dermatological consultation.



1. Full blood counts should be closely monitored before, during and after treatment. If a clinically significant drop in white-cell or platelet count develops, methotrexate should be withdrawn immediately. Patients should be advised to report all symptoms or signs suggestive of infection.



2. Methotrexate may be hepatotoxic, particularly at high dosage or with prolonged therapy. Liver atrophy, necrosis, cirrhosis, fatty changes, and periportal fibrosis have been reported. Since changes may occur without previous signs of gastrointestinal or haematological toxicity, it is imperative that hepatic function be determined prior to initiation of treatment and monitored regularly throughout therapy. If substantial hepatic function abnormalities develop, methotrexate dosing should be suspended for at least 2 weeks.Special caution is indicated in the presence of pre-existing liver damage or impaired hepatic function. Concomitant use of other drugs with hepatotoxic potential (including alcohol) should be avoided.



3. Methotrexate has been shown to be teratogenic; it has caused foetal death and/or congenital anomalies. Therefore it is not recommended in women of childbearing potential unless there is appropriate medical evidence that the benefits can be expected to outweigh the considered risks. Pregnant psoriatic patients should not receive methotrexate.



4. Renal function should be closely monitored before, during and after treatment. Caution should be exercised if significant renal impairment is disclosed. Reduce dose of methotrexate in patients with renal impairment. High doses may cause the precipitation of methotrexate or its metabolites in the renal tubules. A high fluid throughput and alkalinisation of the urine to pH 6.5 – 7.0, by oral or intravenous administration of sodium bicarbonate (5 x 625 mg tablets every three hours) or acetazolamide (500 mg orally four times a day) is recommended as a preventative measure. Methotrexate is excreted primarily by the kidneys. Its use in the presence of impaired renal function may result in accumulation of toxic amounts or even additional renal damage.



5. Diarrhoea and ulcerative stomatitis are frequent toxic effects and require interruption of therapy, otherwise haemorrhagic enteritis and death from intestinal perforation may occur.



6. Methotrexate affects gametogenesis during the period of its administration and may result in decreased fertility which is thought to be reversible on discontinuation of therapy. Conception should be avoided during the period of methotrexate administration and for at least 6 months thereafter. Patients and their partners should be advised to this effect.



7. Methotrexate has some immunosuppressive activity and immunological responses to concurrent vaccination may be decreased. The immunosuppressive effect of methotrexate should be taken into account when immune responses of patients are important or essential.



8. Pleural effusions and ascites should be drained prior to initiation of methotrexate therapy.



9. Deaths have been reported with the use of methotrexate. Serious adverse reactions including deaths have been reported with concomitant administration of methotrexate (usually in high doses) along with some non-steroidal anti-inflammatory drugs (NSAIDs).



10. Concomitant administration of folate antagonists such as trimethoprim/sulphamethoxazole has been reported to cause an acute megaloblastic pancytopenia in rare instances.



11. Systemic toxicity may occur following intrathecal administration. Blood counts should be monitored closely.



12 A chest X-ray is recommended prior to initiation of methotrexate therapy.



13 If acute methotrexate toxicity occurs, patients may require folinic acid.



Precautions



Methotrexate has a high potential toxicity, usually dose related, and should be used only by physicians experienced in antimetabolite chemotherapy, in patients under their constant supervision. The physician should be familiar with the various characteristics of the drug and its established clinical usage.



Before beginning methotrexate therapy or reinstituting methotrexate after a rest period, assessment of renal function, liver function and blood elements should be made by history, physical examination and laboratory tests.



It should be noted that intrathecal doses are transported into the cardiovascular system and may give rise to systemic toxicity. Systemic toxicity of methotrexate may also be enhanced in patients with renal dysfunction, ascites, or other effusions due to prolongation of serum half-life.



Malignant Lymphomas may occur in patients receiving low dose methotrexate, in which case therapy must be discontinued. Failure of the Lymphoma to show signs of spontaneous regression requires the initiation of cytotoxic therapy.



Carcinogenesis, mutagenesis, and impairment of fertility: Animal carcinogenicity studies have demonstrated methotrexate to be free of carcinogenic potential. Although methotrexate has been reported to cause chromosomal damage to animal somatic cells and bone marrow cells in humans, these effects are transient and reversible. In patients treated with methotrexate, evidence is insufficient to permit conclusive evaluation of any increased risk of neoplasia.



Methotrexate has been reported to cause impairment of fertility, oligospermia, menstrual dysfunction and amenorrhoea in humans, during and for a short period after cessation of therapy. In addition, methotrexate causes, embryotoxicity, abortion and foetal defects in humans. Therefore the possible risks of effects on reproduction should be discussed with patients of childbearing potential (see 'Warnings').



Patients undergoing therapy should be subject to appropriate supervision so that signs or symptoms of possible toxic effects or adverse reactions may be detected and evaluated with minimal delay. Pretreatment and periodic haematological studies are essential to the use of methotrexate in chemotherapy because of its common effect of haematopoietic suppression. This may occur abruptly and on apparent safe dosage, and any profound drop in blood cell count indicates immediate stopping of the drug and appropriate therapy. In patients with malignant disease who have pre-existing bone marrow aplasia, leukopenia, thrombocytopenia or anaemia, methotrexate should be used with caution, if at all.



In general, the following laboratory tests are recommended as part of essential clinical evaluation and appropriate monitoring of patients chosen for or receiving methotrexate therapy: complete haemogram; haematocrit; urinalysis; renal function tests; liver function tests and chest X-ray.



The purpose is to determine any existing organ dysfunction or system impairment. The tests should be performed prior to therapy, at appropriate periods during therapy and after termination of therapy.



Liver biopsy may be considered after cumulative doses > 1.5g have been given, if hepatic impairment is suspected.



Methotrexate is bound in part to serum albumin after absorption, and toxicity may be increased because of displacement by certain drugs such as salicylates, sulphonamides, phenytoin, and some antibacterials such as tetracycline, chloramphenicol and para-aminobenzoic acid. These drugs, especially salicylates and sulphonamides, whether antibacterial, hypoglycaemic or diuretic, should not be given concurrently until the significance of these findings is established.



Vitamin preparations containing folic acid or its derivatives may alter response to methotrexate.



Methotrexate should be used with extreme caution in the presence of infection, peptic ulcer, ulcerative colitis, debility, and in extreme youth and old age. If profound leukopenia occurs during therapy, bacterial infection may occur or become a threat. Cessation of the drug and appropriate antibiotic therapy is usually indicated. In severe bone marrow depression, blood or platelet transfusions may be necessary.



Since it is reported that methotrexate may have an immunosuppressive action, this factor must be taken into consideration in evaluating the use of the drug where immune responses in a patient may be important or essential.



In all instances where the use of methotrexate is considered for chemotherapy, the physician must evaluate the need and usefulness of the drug against the risks of toxic effects or adverse reactions. Most such adverse reactions are reversible if detected early. When such effects or reactions do occur, the drug should be reduced in dosage or discontinued and appropriate corrective measures should be taken according to the clinical judgement of the physician. Reinstitution of methotrexate therapy should be carried out with caution, with adequate consideration of further need for the drug and alertness as to the possible recurrence of toxicity.



Methotrexate given concomitantly with radiotherapy may increase the risk of soft tissue necrosis and osteonecrosis.



4.5 Interaction With Other Medicinal Products And Other Forms Of Interaction



Methotrexate is extensively protein bound and may be displaced by certain drugs such as salicylates, hypoglycaemics, diuretics, sulphonamides, diphenylhydantoins, tetracyclines, chloramphenicol and p-aminobenzoic acid, and the acidic anti-inflammatory agents, so causing a potential for increased toxicity when used concurrently.



Concomitant use of other drugs with nephrotoxic,myelotoxic or hepatotoxic potential such as leflunomide, azathioprine, sulphasalazine, retinoids and alcohol should be avoided.



Vitamin preparations containing folic acid or its derivatives may decrease the effectiveness of methotrexate.



Caution should be used when NSAIDs and salicylates are administered concomitantly with methotrexate. These drugs have been reported to reduce the tubular secretion of methotrexate and thereby may enhance its toxicity. Concomitant use of NSAIDs and salicylates has been associated with fatal methotrexate toxicity.



However, patients using constant dosage regimens of NSAIDs have received concurrent doses of methotrexate without problems observed.



Renal tubular transport is also diminished by probenecid and penicillins; use of these with methotrexate should be carefully monitored.



Omeprazole may inhibit methotrexate clearance resulting in potentially toxic methotrexate levels.



Severe bone marrow depression has been reported following the concurrent use of methotrexate and co-trimoxazole or trimethoprim. Concurrent use should probably be avoided.



Methotrexate-induced stomatitis and other toxic effects may be increased by the use of nitrous oxide.



An increased risk of hepatitis has been reported following the use of methotrexate and the acitretin metabolite, etretinate. Consequently, the concomitant use of methotrexate and acitretin should be avoided.



4.6 Pregnancy And Lactation



Abortion, foetal death, and/or congenital anomalies have occurred in pregnant women receiving methotrexate, especially during the first trimester of pregnancy. Methotrexate is contraindicated in the management of psoriasis or rheumatoid arthritis in pregnant women. Women of childbearing potential should not receive methotrexate until pregnancy is excluded. For the management of psoriasis or rheumatoid arthritis, methotrexate therapy in women should be started immediately following a menstrual period and appropriate measures should be taken in men or women to avoid conception during and for at least 6 months following cessation of methotrexate therapy.



Both men and women receiving methotrexate should be informed of the potential risk of adverse effects on reproduction. Women of childbearing potential should be fully informed of the potential hazard to the foetus should they become pregnant during methotrexate therapy. In cancer chemotherapy, methotrexate should not be used in pregnant women or women of childbearing potential who might become pregnant unless the potential benefits to the mother outweigh the possible risks to the foetus.



Defective oogenesis or spermatogenesis, transient oligospermia, menstrual dysfunction, and infertility have been reported in patients receiving methotrexate.



Methotrexate is distributed into breast milk. Because of the potential for serious adverse reactions to methotrexate in nursing infants, a decision should be made whether to discontinue nursing or the drug, taking into account the importance of the drug to the woman.



4.7 Effects On Ability To Drive And Use Machines



Not applicable



4.8 Undesirable Effects



The most common adverse reactions include ulcerative stomatitis, leukopenia, vasculitis, eye-irritation and loss of libido/impotence, nausea and abdominal distress. Although very rare, anaphylactic reactions to methotrexate have occurred. Others reported are malaise, undue fatigue, chills and fever, dizziness and decreased resistance to infection. In general, the incidence and severity of side effects are considered to be dose-related. Adverse reactions as reported for the various systems are as follows:



Skin: Stevens-Johnson syndrome, epidermal necrolysis, erythematous rashes, pruritus, urticaria, photosensitivity, pigmentary changes, alopecia, ecchymosis, telangiectasia, acne, furunculosis. Lesions of psoriasis may be aggravated by concomitant exposure to ultraviolet radiation. Skin ulceration in psoriatic patients and rarely painful erosion of psoriatic plaques have been reported. The recall phenomenon has been reported in both radiation and solar damaged skin.



Blood: Bone marrow depression, leukopenia, thrombocytopenia, anaemia, hypogammaglobulinaemia, haemorrhage from various sites, septicaemia.



Alimentary System: Gingivitis, pharyngitis, stomatitis, anorexia, vomiting, diarrhoea, haematemesis, melaena, gastrointestinal ulceration and bleeding, enteritis, hepatic toxicity resulting in active liver atrophy, necrosis, fatty metamorphosis, periportal fibrosis, or hepatic cirrhosis. In rare cases the effect of methotrexate on the intestinal mucosa has led to malabsorption or toxic megacolon.



Hepatic: Hepatic toxicity resulting in significant elevations of liver enzymes, acute liver atrophy, necrosis, fatty metamorphosis, periportal fibrosis or cirrhosis or death may occur, usually following chronic administration.



Urogenital System: Renal failure, azotaemia, cystitis, haematuria, defective oogenesis or spermatogenesis, transient oligospermia, menstrual dysfunction, infertility, abortion, foetal defects, severe nephropathy. Vaginitis, vaginal ulcers, cystitis, haematuria and nephropathy have also been reported.



Pulmonary System: Acute or chronic interstitial pneumonitis, often associated with blood eosinophilia, may occur and deaths have been reported (see Section 4.4 Special warnings and special precautions for use). Acute pulmonary oedema has also been reported after oral and intrathecal use. Pulmonary fibrosis is rare. A syndrome consisting of pleuritic pain and pleural thickening has been reported following high doses.



Central Nervous System: Headaches, drowsiness, blurred vision, aphasia, hemiparesis and convulsions have occurred possibly related to haemorrhage or to complications from intra-arterial catheterization. Convulsion, paresis, Guillain-Barre syndrome and increased cerebrospinal fluid pressure have followed intrathecal administration.



Other reactions related to, or attributed to the use of methotrexate such as pneumonitis, metabolic changes, precipitation of diabetes, osteoporotic effects, abnormal changes in tissue cells and even sudden death have been reported.



There have been reports of leukoencephalopathy following intravenous methotrexate in high doses, or low doses following cranial-spinal radiation.



Adverse reactions following intrathecal methotrexate are generally classified into three groups, acute, subacute, and chronic. The acute form is a chemical arachnoiditis manifested by headache, back or shoulder pain, nuchal rigidity, and fever. The subacute form may include paresis, usually transient, paraplegia, nerve palsies, and cerebellar dysfunction. The chronic form is a leukoencephalopathy manifested by irritability, confusion, ataxia, spasticity, occasionally convulsions, dementia, somnolence, coma, and rarely, death. There is evidence that the combined use of cranial radiation and intrathecal methotrexate increases the incidence of leukoencephalopathy.



Additional reactions related to or attributed to the use of methotrexate such as osteoporosis, abnormal (usually 'megaloblastic') red cell morphology, precipitation of diabetes, other metabolic changes, and sudden death have been reported.



A small number of cases of accelerated nodulosis have been reported in the literature it is unclear whether the development of accelerated nodulosis during methotrexate therapy is a drug-related side effect or is part of the natural history of the rheumatoid disease.



4.9 Overdose



Calcium folinate (Calcium Leucovorin) is a potent agent for neutralizing the immediate toxic effects of methotrexate on the haematopoietic system. Where large doses or overdoses are given, calcium folinate may be administered by intravenous infusion in doses up to 75 mg within 12 hours, followed by 12 mg intramuscularly every 6 hours for 4 doses. Where average doses of methotrexate appear to have an adverse effect 6-12 mg of calcium folinate may be given intramuscularly every 6 hours for 4 doses. In general, where overdosage is suspected, the dose of calcium folinate should be equal to or higher than, the offending dose of methotrexate and should be administered as soon as possible; preferably within the first hour and certainly within 4 hours after which it may not be effective.



Other supporting therapy such as blood transfusion and renal dialysis may be required. In cases of massive overdose, hydration and urinary alkalisation may be necessary to prevent precipitation of methotrexate and/or its metabolites in the renal tubules. Neither haemodialysis nor peritoneal dialysis has been shown to improve methotrexate elimination. Effective clearance of methotrexate has been reported with acute, intermittent haemodialysis using a high flux dialyser.



5. Pharmacological Properties



5.1 Pharmacodynamic Properties



Methotrexate is an antimetabolite which acts principally by competitively inhibiting the enzyme, dihydrofolate reductase. In the process of DNA synthesis and cellular replication, folic acid must be reduced to tetrahydrofolic acid by this enzyme, and inhibition by methotrexate interferes with tissue cell reproduction. Actively proliferating tissues such as malignant cells are generally more sensitive to this effect of methotrexate. It also inhibits antibody synthesis.



Methotrexate also has immunosuppressive activity, in part possibly as a result of inhibition of lymphocyte multiplication. The mechanism(s) of action in the management of rheumatoid arthritis of the drug is not known, although suggested mechanisms have included immunosuppressive and/or anti-inflammatory effect.



5.2 Pharmacokinetic Properties



In doses of 0.1 mg (of methotrexate) per kg, methotrexate is completely absorbed from the G.I. tract; larger oral doses may be incompletely absorbed. Peak serum concentrations are achieved within 0.5 - 2 hours following I.V. / I.M. or intra-arterial administration. Serum concentrations following oral administration of methotrexate may be slightly lower than those following I.V. injection.



Methotrexate is actively transported across cell membranes. The drug is widely distributed into body tissues with highest concentrations in the kidneys, gall bladder, spleen, liver and skin. Methotrexate is retained for several weeks in the kidneys and for months in the liver. Sustained serum concentrations and tissue accumulation may result from repeated daily doses. Methotrexate crosses the placental barrier and is distributed into breast milk. Approximately 50% of the drug in the blood is bound to serum proteins.



In one study, methotrexate had a serum half-life of 2-4 hours following I.M. administration. Following oral doses of 0.06 mg/kg or more, the drug had a serum half-life of 2-4 hours, but the serum half-life was reported to be increased to 8-10 hours when oral doses of 0.037 mg/kg were given.



Methotrexate does not appear to be appreciably metabolised. The drug is excreted primarily by the kidneys via glomerular filtration and active transport. Small amounts are excreted in the faeces, probably via the bile. Methotrexate has a biphasic excretion pattern. If methotrexate excretion is impaired accumulation will occur more rapidly in patients with impaired renal function. In addition, simultaneous administration of other weak organic acids such as salicylates may suppress methotrexate clearance.



5.3 Preclinical Safety Data



Not applicable



6. Pharmaceutical Particulars



6.1 List Of Excipients



Other Constituents






















Maize Starch




 



 




 



 




Lactose




 



 




 



 




Pre gelatinized Starch (Prejel PA5)




 



 




 



 




Polysorbate 80




 



 




 



 




Microcrystalline Cellulose (AVICEL 101)




 



 




 



 




Magnesium Stearate




 



 




 



 



There is no overage included in the formulation.



6.2 Incompatibilities



Immediate precipitation or turbidity results when combined with certain concentrations of Droperidol, Heparin Sodium, Metoclopramide Hydrochloride, Ranitidine Hydrochloride in Syringe.



6.3 Shelf Life



60 months



6.4 Special Precautions For Storage



There are no specific storage requirements.



6.5 Nature And Contents Of Container



White polyethylene bottle with high density polyethylene screw closure containing 100 tablets.



6.6 Special Precautions For Disposal And Other Handling



Not applicable.



7. Marketing Authorisation Holder



Hospira UK Limited



Queensway



Royal Leamington Spa



Warwickshire, CV31 3RW



8. Marketing Authorisation Number(S)



PL 04515/0005



9. Date Of First Authorisation/Renewal Of The Authorisation



9th March 2003



10. Date Of Revision Of The Text



January 2008