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HOW TO USE: This medication is given by injection into a vein by a health care professional as directed by your doctor. Dosage is based on your medical condition, body size, and response to treatment.If you are receiving this medication to treat multiple sclerosis, read the Patient Information Leaflet available from your doctor or pharmacist before starting treatment and before receiving each dose.If this medication touches your skin, immediately wash the area well with soap and water. If this medication gets in your eye, open the eyelid and flush with water for 15 minutes, then seek immediate medical attention.

SIDE EFFECTS: See also Warning section.Nausea, vomiting, diarrhea, headache, or unusual tiredness may occur. In some cases, your doctor may prescribe medication to prevent or relieve nausea and vomiting. Eating several small meals, not eating before treatment, or limiting activity may help lessen some of these effects. If these effects persist or worsen, tell your doctor or pharmacist promptly.Severe nausea, vomiting, or diarrhea may infrequently result in a loss of too much body water (dehydration). Contact your doctor promptly if you notice any symptoms of dehydration such as unusual decreased urination, unusual dry mouth/increased thirst, lack of tears, dizziness/lightheadedness, or pale/wrinkled skin.Temporary hair thinning/loss may occur. Normal hair growth should return after treatment has ended.This medication may cause your urine to turn blue-green. The white part of your eyes may also turn a bluish color. These effects are temporary, normal, and harmless.Many people using this medication have serious side effects. However, your doctor has prescribed this drug because he or she has judged that the benefit to you is greater than the risk of side effects. Careful monitoring by your doctor may decrease your risk.Tell your doctor right away if you have any serious side effects, including: menstrual changes (e.g., stopped periods), unusual bleeding/bruising (e.g., small red spots on the skin, black/bloody stools, bloody urine, vomit that looks like coffee grounds), numbness/tingling feelings, seizure.This medication can lower the body's ability to fight an infection. Tell your doctor promptly if you develop any signs of an infection such as fever, chills, or persistent sore throat.Pain or sores in the mouth and throat may occur. Brush your teeth gently/carefully, avoid using mouthwash that contains alcohol, and rinse your mouth frequently with cool water mixed with baking soda or salt. It may also be best to eat soft, moist foods.A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any of the following symptoms of a serious allergic reaction: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.In the US -Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.

Report Problems to the Food and Drug Administration   You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088. Need help identifying pills and medications? Use the pill identifier tool on RxList.