USP

This is not a flashy consumer website; it is a highly specialized and authoritative technical resource operated by the United States Pharmacopeia (USP), the official public standards-setting body for medicines, dietary supplements, and ingredients in the U.S. and many other countries. If you work in pharmaceutical development, quality control, or regulatory affairs, this database is an indispensable tool you'll likely use constantly. The core offering here is a searchable repository of dissolution and disintegration test conditions as specified in the official USP drug product monographs. Dissolution testing is critical—it determines how a drug releases its active ingredient over time in a controlled lab environment, which directly relates to how the drug performs in the human body. Finding the correct, official method for a specific drug product can be a time-consuming process of digging through hundreds of pages of compendial text. This database streamlines that entire process. Imagine you are a scientist developing a generic version of a common blood pressure medication. Before you can run any tests, you must know the exact, legally mandated procedure. With this database, you can search not just by the drug's monograph name, but also drill down by specific technical parameters. You can filter results to find all methods that use a particular dissolution medium composition—say, one containing a specific surfactant at a pH of 6.8, in a volume of 900 mL, and deaerated. You can specify the apparatus type: whether it's the standard Apparatus 1 (basket) at 50 rpm, or the more complex Apparatus 4 (flow-through cell) for poorly soluble drugs. You can even search by the duration of the test or the analytical finish procedure, like high-performance liquid chromatography (HPLC)