The FDA has approved biosimilar medications to treat conditions such as chronic skin and bowel diseases, arthritis, kidney conditions, macular degeneration, and some cancers. Biosimilars are as safe and effective as the original biologic. Both are rigorously and thoroughly evaluated by the FDA.
Read more at: http://www.fda.gov/consumers/consumer-updates/biosimilar-and-interchangeable-biologics-more-treatment-choices