Postmarketing Studies and Clinical Trials—Implementation of Section 505(o)(3) of the Federal Food, Drug, and Cosmetic Act

The draft guidance is being revised to describe the multiple factors that FDA considers, before requiring a postmarketing study or clinical trial for the purposes described in the Federal Food, Drug, and Cosmetic Act (FD&C Act), when determining the sufficiency of the reports under the FD&C Act and the active postmarket risk identification and analysis (ARIA) system available under the FD&C Act to meet these purposes.

This guidance provides information on the implementation of section 505(o)(3) of the FD&C Act (21 U.S.C. 355(o)(3)), which authorizes FDA to require certain postmarketing studies and clinical trials for prescription drugs approved under section 505(c) of the FD&C Act and biological products approved under section 351 of the Public Health Service Act (the PHS Act) (42 U.S.C. 262).