BETHESDA, MdPatients have a new, reliable source for information about drugs. The National Library of Medicine has added the US Pharmacopeias Drug Information, Vol. II, Advice for the Patient, to its MEDLINEplus website. The publication provides extensive information about more than 9,000 brand name, generic prescription, and over-the-counter medications, written in nontechnical language. The information is available at http://medlineplus.gov.