Which amendments require efficacy demonstration in addition to safety?

• A. Harris-Kefauver Amendments
• B. Shirley Amendments
• C. Orphan Drug Act
• D. Stark Law

Answer: (A)

Demonstrating efficacy in addition to safety is required for new drug approval because the Harris-Kefauver Amendments established that a drug must prove effectiveness as part of the approval process, addressing public safety concerns raised by past tragedies. This meant that sponsors must provide substantial evidence from well-controlled trials showing that the drug works for its intended use, not just that it is safe. The intent is to ensure that benefits clearly outweigh risks before a medication reaches patients.

The Shirley Amendments focused on prohibiting misbrand advertising and misleading labeling rather than requiring efficacy data. The Orphan Drug Act offers incentives to develop treatments for rare diseases but does not by itself impose efficacy demonstration standards. The Stark Law regulates physician referrals and financial relationships and has no bearing on drug testing or approval requirements.