A Summary of the Key Differences Between the FDA’s Drug and Dietary Supplement GMPs Share page: In general, the Part 111 GMP requirements, although similar, are less stringent and tend to be more flexible than the Part 211 GMP requirements. Document(s) to download: Summary-of-Key-Differences-Between-FDA-Drug-Dietary-Supplement-GMPs-03042015.pdf (147.02 KB) Issues: OTC Medicines Dietary Supplements Other Issues Quality Related Posts Press Releases and Statements CHPA Commends Lawmakers for Urging FDA to Protect the Rx-OTC-Switch Pathway Apr 11, 2025 Press Releases and Statements House Leaders Prioritize OMUFA Renewal, CHPA Welcomes Progress Apr 1, 2025 Press Releases and Statements CHPA Statement on Senate Confirmation of Dr. Makary as FDA Commissioner Mar 25, 2025