https://hmc.usp.org/

The Herbal Medicine Compendium of the US Pharmacopoeia provides standards for herbal ingredients used in herbal medicines, primarily expressed through monographs. Each monograph contains general information, including the definition of the herbal ingredient relative to the monograph title, followed by a detailed specification. These specifications include tests for critical quality attributes of the herbal ingredient, along with analytical test procedures and acceptance criteria for specified tests.