Drug Information PortalThe Drug Information Portal at http://druginfo.nlm.nih.gov is a free web resource from the National Library of Medicine (NLM) that provides an informative, user-friendly portal to current drug information for over 15,000 drugs. Links to sources span the breadth of NLM, the National Institutes of Health (NIH) and other government agencies. Current information regarding consumer health, clinical trials, AIDS-related drug information, MeSH® pharmacological actions, PubMed® biomedical literature, and physical properties and structure is easily retrieved by searching on a drug name. A varied selection of focused topics in medicine and drug-related information is also available from displayed subject headings.