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Avonex IM

Drug Interactions


Generic Name: INTERFERON BETA 1A - INJECTION
Pronounced: (in-ter-FEER-on BAY-tuh)

Avonex IM Interactions

Your healthcare professionals (e.g., doctor or pharmacist) may already be aware of any possible drug interactions and may be monitoring you for it. Do not start, stop, or change the dosage of any medicine before checking with them first.

Before using this medication, tell your doctor or pharmacist of all prescription and nonprescription/herbal products you may use, especially of:

  • hydroxyurea
  • telbivudine
  • theophylline
  • other drugs/herbals which may be harmful to your liver (e.g., isoniazid, kava, methotrexate, nefazodone)


This document does not contain all possible interactions. Therefore, before using this product, tell your doctor or pharmacist of all the products you use. Keep a list of all your medications with you, and share the list with your doctor and pharmacist.

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