The National Library of Medicine, a part of the National Institutes of Health, created and maintains MedlinePlus to assist consumers in locating authoritative health information. The first place to go when seeking information MedlinePlus pages offer carefully selected links to web resources with health information on more than 900 topics. The A.D.A.M. medical encyclopedia includes images, videos, and over 4,000 brief articles. Drug and supplement information, a medical dictionary, patient education interactive tutorials, and links to health information in multiple languages are also provided.