MedlinePlusMedlinePlus is a consumer health service of the National Library of Medicine and the National Institutes of Health. Providing patients with authoritative and up to date information to help answer health questions, MedlinePlus includes links to hundreds of topics on medical conditions, diseases, wellness, drugs, herbs, and supplements. In addition to a medical encyclopedia and dictionary, current health news, and extensive directories to find healthcare practitioners and hospitals, MedlinePlus provides a collection of interactive healthcare related tutorials. Much of the information in MedlinePlus is also available in Spanish.