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What happens if I miss a dose (Intron A)?

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

What happens if I overdose (Intron A)?

Seek emergency medical attention if you think you have used too much of this medicine. Symptoms of an interferon alfa-2b overdose are not known.

What should I avoid while using interferon alfa-2b (Intron A)?

If you are being treated for hepatitis or genital warts, avoid having unprotected sex or sharing needles, razors, or toothbrushes. Taking this medication will not prevent you from passing hepatitis or genital warts to other people. Talk with your doctor about safe methods of preventing transmission during sex. Sharing drug or medicine needles is never safe, even for a healthy person.

Avoid drinking alcohol if you are also taking acetaminophen (Tylenol) while using interferon alfa-2b.

What other drugs will affect interferon alfa-2b (Intron A)?

Tell your doctor about all other medications you use, especially:

• zidovudine (Retrovir);
• theophylline (Elixophyllin, Respbid, Slo-Bid, Theobid, Theo-Dur, Theochron, Theolair, and others); or
• medicines used to prevent organ transplant rejection, such as sirolimus (Rapamune) or tacrolimus (Prograf).

This list is not complete and there may be other drugs that can interact with interferon alfa-2b. Tell your doctor about all your prescription and over-the-counter medications, vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start a new medication without telling your doctor.

Where can I get more information?

Your pharmacist can provide more information about interferon alfa-2b.

Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.

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