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Warning: USP–NF on Unauthorized Websites

USP–NF is fully copyrighted by the U.S. Pharmacopeia. The official website of USP–NF Online is Websites other than the official website that claim to offer the content of USP–NF to viewers are not authorized by USP, and are committing copyright infringement. The content on those unauthorized websites is not validated by USP, and may include incorrect or out-of-date information. Users should not rely on an unauthorized website for USP–NF content.

If you are aware of an unauthorized website that claims to include USP–NF, please report the website's address to