MedlinePlusMedlinePlus is an authoritative source of general information on health topics provided from the National Library of Medline, the National Institutes of Health and other government agencies and health-related organizations. Both health professionals and consumers can depend on it for authoritative and up to date information. It includes information on diseases and conditions, lists of hospitals and physicians, a medical encyclopedia, a medical dictionary, information on prescription and nonprescription drugs, and the latest health news.