Generic Name: Interferon alfacon-1

  • What is Infergen?

    Infergen is a medicine used to treat hepatitis C virus infection.

  • What is the most important information I should know about Infergen?

    Infergen can cause mood or behavior problems such as irritability, depression, nervousness, anxiety, aggressive behavior, or suicide.

    Infergen can cause immune system problems such as rheumatoid arthritis (a type of arthritis that involves inflammation of the joints), systemic lupus erythematosus (disease that affects the immune system), or psoriasis (immune disorder that affects the skin).

    Infergen can cause infections, stroke, or heart problems such as low blood pressure, abnormal heartbeat, chest pain, or heart attack.

    Tell your doctor immediately if you experience new or worsening mental problems, trouble breathing, severe chest pain, weakness, loss of coordination, numbness, fever, chills, burning or pain with urination, or bloody diarrhea while you are taking Infergen.

  • Who should not take Infergen?

    Do not take Infergen if you have certain types of other liver problems, autoimmune hepatitis, or certain types of anemia.

    Do not use Infergen if you are allergic to it or any of its ingredients.

  • What should I tell my doctor before I take the first dose of Infergen?

    Tell your doctor about all prescription, over-the-counter, and herbal medications you are taking before beginning treatment with Infergen. Also, talk to your doctor about your complete medical history, especially if you have mental, heart, immune system, bleeding, kidney, liver, lung, or thyroid problems. Tell your doctor if you have blood clots, addiction to drugs or alcohol, diabetes, colitis (inflammation of the colon), cancer, high fat in your blood, or if you have an organ transplant and you are taking a medicine that keeps your body from rejecting your transplant.

  • What is the usual dosage?

    The information below is based on the dosage guidelines your doctor uses. Depending on your condition and medical history, your doctor may prescribe a different regimen. Do not change the dosage or stop taking your medication without your doctor's approval.

    Adult: Your doctor will prescribe the appropriate dose for you based on your condition.

  • How should I take Infergen?

    Use Infergen as prescribed by your doctor.

    Your doctor will show you how to prepare, measure, and inject your dose of Infergen before you use it for the first time. Infergen is injected subcutaneously (just below the skin). Inject your dose of Infergen at the same time each day.

    Please review the instructions that came with your prescription on how to properly inject Infergen.

  • What should I avoid while taking Infergen?

    Do not use Infergen with Tyzeka (telbivudine). The use of Tyzeka with Infergen can cause nerve problems.

    Do not use Infergen with medications that may lower your blood cell counts.

  • What are possible food and drug interactions associated with Infergen?

    No significant interactions have been reported with Infergen at this time. However, always tell your doctor about any medicines you take, including over-the-counter medications, vitamins, and herbal supplements.

  • What are the possible side effects of Infergen?

    Side effects cannot be anticipated. If any develop or change in intensity, tell your doctor as soon as possible. Only your doctor can determine if it is safe for you to continue taking this drug.

    Side effects may include: allergic reactions, back or body pain, blood problems, bloody diarrhea, colitis, confusion, depression, diarrhea, difficulty breathing, eye problems, fever, "flu-like" symptoms, hair thinning, headache, inflammation of the lungs, loss of appetite, muscle aches, nausea, pain in the stomach area, pancreatitis (inflammation of the pancreas), rash, tiredness, vomiting, yellowing of skin or whites of the eyes

  • Can I receive Infergen if I am pregnant or breastfeeding?

    The effects of Infergen during pregnancy and breastfeeding are unknown. Infergen can cause harm to your baby. Do not take Infergen if you are pregnant or breastfeeding. Tell your doctor immediately if you are pregnant, plan to become pregnant, or are breastfeeding.

  • What should I do if I miss a dose of Infergen?

    If you miss a dose of Infergen, inject it as soon as you remember and call your doctor. Do not inject the next dose until you have been told what you should do by your doctor.

  • How should I store Infergen?

    Store in the refrigerator.