National Library of Medicine’s MedlinePlus
MedlinePlus directs you to information that will help answer health questions. MedlinePlus brings together authoritative information from the National Library of Medicine (NLM), the National Institutes of Health (NIH), other government agencies, and health-related organizations. It also contains extensive information about drugs and supplements, an illustrated medical encyclopedia, and videos. Links to reputable and credible information are available in English, Spanish, and, for some topics, in other languages.