The USP is a non-governmental organization which promotes public health. For this purpose, it produces quality standards for medicines and medical products, which are updated regularly. The results are published in the United States Pharmacopeia and the "National Formulary" (USP-NF). To get to the online Pharmacopeial Forum (PF) you first have to enter the free registration for a login here: http://www.usppf.com/pf/login.