Interferon is a protein made by humans and other animals to help fight infections. Different types of interferon are made in a laboratory (synthetic interferon) and used as medicines to treat certain diseases, such as leukemia, multiple sclerosis, hepatitis C, and some forms of cancer.

Current as of: February 20, 2015

Author: Healthwise Staff

Medical Review: Adam Husney, MD - Family Medicine & Anne C. Poinier, MD - Internal Medicine & Barrie J. Hurwitz, MD - Neurology