Because they comprise up to 90% of medications, the quality of inactive ingredients (excipients) is critical for a drug to be safe and effective. Our documentary standards provide the appropriate, validated test procedures to establish the identity, purity and quality of excipients, while our reference standards are authentic specimens that have been approved as suitable for use as comparison standards in USP or NF tests and assays. At every step, we're protecting the public's health by helping to prevent poor-quality medication from entering the marketplace.

USP’s AAPS Chalk Talk Videos
excipient functions

Get answers to questions about excipient characterization. Watch videos from a live presentation at the AAPS 2017 Annual Meeting by USP Senior Scientific Liaison, Dr. Galina Holloway.

Excipients Stakeholder forum: Improving USP standards

View presentation videos from the Excipients Stakeholder forum on topics ranging from the new USP branding to multiple perspectives on atypical actives.