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For Healthcare Professionals

Search Literature and Clinical Trials

Search more than 28 million citations for biomedical literature from MEDLINE, life science journals, and online books. Citations may include links to full-text content from PubMed Central and publisher web sites. Learn more about how to limit your search to articles that have free full text available. NLM also provides a directory of topic specific queries for PubMed.
Search a database of privately and publicly funded clinical studies conducted around the world. Also see: Clinical Alerts and Advisories

Bookshelf provides free online access to books and documents in life science and healthcare.

Health Services Research Tools and Databases 
Learn more about searching for health services research literature at NLM. 

Getting Literature through Loansome Doc
Loansome Doc is a document delivery request system provided by the National Library of Medicine. Loansome Doc allows users to order articles retrieved in PubMed searches from DOCLINE libraries with whom they have registered.

Find Medical, Genetics, and Toxicology Resources

A resource to provide a public, tracked record of reported relationships between human variation and observed health status with supporting evidence. Related information in the NIH Genetic Testing Registry (GTR)MedGenGeneOMIMPubMed and other sources is accessible through hyperlinks on the records.

Find more resources on genetics and medicine from NLM. 

Toxicology and Environmental Health
Find out more about toxicology and environmental health resources at NLM. 

Locate Drug Information

Search a database of the most recent drug labels (also called package inserts) submitted to the FDA.

Find more resources on drugs from NLM. 

Find Health Information for Your Patients

MedlinePlus Health Information
Trusted health information about diseases, conditions, and wellness issues for patients and their family and friends.

NIH MedlinePlus Magazine
The NIH MedlinePlus magazine provides reliable, up-to-date information on health topics to patients and families and the latest breakthroughs from NIH-supported research. 

Genetics Home Reference
Genetics Home Reference provides consumer-friendly information about human genetics and genetic disorders.

HealthReach - Health Information in Many Languages
HealthReach provides quality multilingual, multicultural public health information for those working with or providing care to individuals with limited English proficiency. 

Learn about Health Data Standards Implementation

Health Information Technology and Health Data Standards at NLM
NLM provides clinical vocabulary standards and tools that support implementation of Meaningful Use, C-CDA, and other programs.

RxNorm provides normalized names for clinical drugs and links its names to many of the drug vocabularies commonly used in pharmacy management and drug interaction software, including those of First Databank, Micromedex, Gold Standard Drug Database, and Multum.

SNOMED CT is one of a suite of designated standards for use in U.S. Federal Government systems for the electronic exchange of clinical health information and is also a required standard in interoperability specifications of the U.S. Healthcare Information Technology Standards Panel.

VSAC is a repository and authoring tool for public value sets created by external programs. Value sets are lists of codes and corresponding terms, from NLM-hosted standard clinical vocabularies (such as SNOMED CT, RxNorm, LOINC and others), that define clinical concepts to support effective and interoperable health information exchange.

MedlinePlus Connect
Use MedlinePlus Connect to link health IT systems, patient portals and electronic health record (EHR) systems to targeted, authoritative patient health information from the website.

Other Information

Nursing Resources
View videos promoting NLM resources for nurses on patient education and research.