Dr. Steinar Madsen is medical director at the Norwegian Medicines Agency. He has been working with generic substitution since it was introduced in Norway in 2001 and with biosimilars since 2006. He is member and previously chairman of the committee for generic substitution at the Agency. Dr. Madsen is also engaged in the drug information service, with a special interest in the safe and cost-effective use of drugs. He is a specialist in internal medicine and cardiology and works part time as a consultant in cardiology.