interferon alfa(con) - injection, Alferon N, Infergen, Intron A, (cont.)
SIDE EFFECTS: Injection site reactions (pain/swelling/redness), diarrhea, upset stomach, loss of appetite, back pain, dizziness, dry mouth, taste changes, nausea, or vomiting may occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.Flu-like symptoms such as headache, tiredness, fever, chills, and muscle aches may occur, especially when you first start this medication. These symptoms usually last about 1 day after the injection and improve or go away after a few weeks of continued use. You can reduce these side effects by injecting this medicine at bedtime and using a fever reducer/pain reliever such as acetaminophen before each dose. Consult your doctor or pharmacist for more information.Temporary hair loss may occur. Normal hair growth should return after treatment has ended.Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.Tell your doctor right away if you have any serious side effects, including: feeling too hot or cold (more than others around you), fast/irregular heartbeat, menstrual changes (absent/delayed/irregular periods), numbness/tingling of hands/feet, persistent tiredness, swelling (especially of face/hands/feet), trouble sleeping, trouble walking, vision changes, easy bleeding/bruising, persistent nausea/vomiting, signs of infection (e.g., fever, persistent sore throat), stomach/abdominal pain, sudden decrease in amount of urine, dark urine, black/tarry stools, yellowing eyes/skin.Get medical help right away if any of these very serious side effects occur: mental/mood changes (e.g., confusion, depression, irritability, thoughts of suicide), chest pain, seizures, weakness on one side of the body, slurred speech.A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: 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?
Back to Medications Index