Electronic Databases & Directories: Subject List
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See also: Alphabetical List
Database Restrictions for Databases Marked [On-site Access Only]:
License agreements between the NLM® and the database vendors or producers limit use of the subscription databases to staff and on-site visitors.
Database vendors copyright the Web-based database search pages.Database producers copyright the databases.
- Dietary Supplement Label Database (DSLD), NIH: ODS & NLM
- Health Topics A-Z, NIH: NCCAM
- Natural Medicines: Comprehensive Database [On-site Access Only]
- BioMed Central
- Biodiversity Heritage Library
- INCHEM: Chemical Safety Information from Intergovernmental Organizations
- IUPAC Nomenclature of Organic Chemistry
- [On-site Access Only]
See Also: NLM Databases
- Google Scholar
- H1 Connect, formerly, Faculty Opinions [On-site Access Only]
- Web of Knowledge/Web of Science [On-site Access Only]
- Arts & Humanities Citation Index
- BIOSIS Citation Index
- Book Citation Indices
- Conference Proceedings Citation Indices
- Current Chemical Reactions
- Current Contents Connect
- Data Citation Index
- Derwent Innovations Index
- Emerging Sources Citation Index
- InCites, formerly Journal Citation Reports
- Index Chemicus
- MEDLINE®
- Preprint Citation Index
- ProQuest Dissertations™ & Theses Citation Index
- Research Commons
- Russian Science Citation Index
- SciELO Citation Index
- Science Citation Index
- SCImago Journal & Country Rank
- Social Sciences Citation Index
- Zoological Record
- Cochrane Library [On-site Access Only]
- ECRI Guidelines Trust requires free registration or paid subscription for selected sections
- JBI Evidence-Based Practice Database[On-site Access Only]
- CenterWatch, clinical trials database
- ClinicalTrials.gov, NIH: NLM
- ClinRegs, NIH: NIAID
- International Clinical Trials Registry Platform
- Genetics and Rare Diseases Database: NIH: GARD Information Center, NCATS
- Health Topics A to Z, HHS: CDC
- MedlinePlus® and MedlinePlus en español, NIH: NLM
- Merck Manual: Consumer Version
- Copyright Clearance Center
- Creative Commons Search
- Espacenet, European Patent Office
- US Patent & Trademark Office
- US Copyright Office, Library of Congress
- Data.gov
- NLM Databases, NIH: NLM
- CCOI Datasets: Center for Clinical Observational Investigations, NIH: NLM
- Data Discovery at the NLM®
- Dataset Catalog
- Generalist Data Repositories, NIH: NLM
- NCBI Datasets, NLM: NIH
- NIH Open Domain-Specific Data Sharing Repositories
- Gale Directory Library [On-site Access Only]
- Directory of Special Libraries and Information Centers
- Encyclopedia of Associations: International
- Encyclopedia of Associations: National
- Encyclopedia of Associations: Regional, State and Local
- Gale Directory of Publications and Broadcast Media
- Government Research Directory
- International Research Centers
- National Directory of Nonprofit Organizations
- National Faculty Directory
- Publishers Directory
- Research Centers Directory
- Scholarships, Fellowships and Loans
- Statistics Sources
- CPT Codes: Current Procedural Terminology
- ICD-11 codes, International Classification of Diseases, 11th Revision
- NLM Databases, Online Catalogs, NIH: NLM
- British Pharmacopoeia [See Reading Room staff for login]
- FDA Drug Approvals and Databases, HHS
- FAERS: FDA Adverse Event Reporting System
- FDA Post-Approval Studies
- Information on Select Dietary Supplement Ingredients and Other Substances
- VAERS: Vaccine Adverse Event Reporting System, HHS: CDC & FDA
- Lexi-Comp Databases [On-site Access Only]
- Micromedex [On-site Access Only]
- DRUGDEX System
- Index Nominum
- POISINDEX Managements
- Red Book [See Reading Room staff for login]
- NLM Databases, NIH: NLM
- PharmGKB, Pharmacogenomics Knowledgebase
- PDR: Physician's Desk Reference
- Sanford Guide of antibiotics and antifungals [On-site Access Only]
- ScienceDirect-Elsevier [On-site Access Only]
See Also: Biology & Chemistry
- Bookshelf, NIH: NLM
- DOAJ: Directory of Open Access Journals
- Electronic Theses & Dissertations Center
- HathiTrust Digital Library
- Internet Archive
- National Academies Press
- Networked Digital Library of Theses and Dissertations
- OpenDOAR: Directory of Open Access Repositories
- PMC: PubMed Central®, NIH: NLM
- SCIELO: Scientific Electronic Library Online
See Also: Government Documents &
Technical Reports
Many images, audio, and video are free to use. However, be sure to determine the copyright or re-use status for items you want to use.
- Internet Archive, images, audio, and video
- NLM Databases, NIH: NLM
- NIH Image Gallery
- Openverse: free stock images and audio
- PHIL: Public Health Image Library, HHS: CDC
- Wellcome Library: Collections and Images
- Wikimedia Commmons
The NLM is a selective government depository.
- Congress.gov, Library of Congress
- Congressional Research Service Reports, Library of Congress
- Defense Technical Information Center (DTIC) Technical Reports
- NASA Scientific & Technical Information
- National Technical Reports Library
- USA.gov
- US Government Publishing Office
- Code of Federal Regulations, updated frequently at ecfr.gov or updated annually (official edition) at govinfo
- govinfo includes the Federal Register and Congressionally Mandated Reports
- GPO Catalog of US Government Publications
- MetaLib, search multiple government sites
simultaneously
See Also: Free Full-Text Articles & Documents
[On-Site Access Only]
- NLM Databases, NIH: NLM
- Medical Subject Headings® (MeSH®) Database and MeSH Browser
- NIH Common Data Elements Repository (CDE)
- UMLS®: Unified Medical Language System®
- VSAC: Value Set Authority Center
- NLM Databases, NIH: NLM
- ProQolid: Patient-Reported Outcome and Quality of Life Instruments Database [On-site Access Only]
- Chronicling America: Historical American Newspapers, Library of Congress
- Digital Public Library of America
- Medical Services and Warfare [On-site Access Only]
- NLM Databases, NIH: NLM
- Digital Collections
- Images from the History of Medicine
- IndexCat™: Index-Catalogue of the Library of the Surgeon-General's Office
- National Archives
- Wellcome Library: Collections and Images
- American Hospital Directory
- Find a Health Center, HHS
- JCI Accredited Organizations, Joint Commission International
- State Hospital Associations
- NLM Classification, NIH: NLM
- Online Dictionary for Library and Information Science
- [On-site Access Only]
- NLM Databases, NIH: NLM
- AccessGUDID: Global Unique Device
Identification Database, HHS: FDA and NIH: NLM - International Medical Devices Database
- ThomasNet.com, supplier discovery & product sourcing
- AccessGUDID: Global Unique Device
- NLM Databases, NIH: NLM
- Genetic Test Registry
- MEDLINE®/PubMed®
- OMIM: Online Mendelian Inheritance in Man
- IndexCat™: Index-Catalogue of the Library of the Surgeon-General's Office
- Compilation of Genetics Resource Databases, NIH: NIDA
- Merck Manual: Professional Version
- [On-site Access Only]
- Books@OVID
- Coronavirus Research Database
- Emergency Medicine Practice
- HAPI: Health & Psychosocial Instruments
- Journals@OVID Full Text
- Pediatric Emergency Medicine Practice
- ScienceDirect Journals and Books
- SCOPUS
- UpToDate
- CDC Databases, HHS: US Centers for Disease Control & Prevention (CDC)
- [On-site Access Only]
- Books in Print with Reviews
- Cabells Journalytics
- Digital Object Identifier (DOI) Lookup
- ISSN Online, International Standard Serial Numbers
- Ulrich's Periodicals Directory
- National Agricultural Databases, National Agricultural Library, USDA: NAL
- PQDT Open[On-site Access Only]
- ComAbstract, Communication Institute for Online Scholarship
- ERIC: Educational Resources Information Center
- National Criminal Justice Reference Service Abstracts Database
- Teacher Reference Center [On-site Access Only]
- FASTATS A to Z, HHS: CDC
- HCUP: Healthcare Cost and Utilization Project, HHS: AHRQ
- Injuries, Illnesses, and Fatalities Databases
- MEPS: Medical Expenditure Panel Survey, HHS: AHRQ
- SEER Cancer Statistics Review, NIH: NCI
- State Health Facts
- CAMEO Chemicals: Database of Hazardous Materials
- CHEMM: Chemical Hazards Emergency Medical Management, HHS: ASPR
- Comparative Toxicogenomics Database, NC State University and NIH
- Envirofacts
- NCRP: National Council on Radiation Protection and Measurements Reports: Safety & Industrial Hygiene [On-site Access Only]
- REMM: Radiation Emergency Medical Management, HHS
- Toxicological Profiles, Toxic Substances Portal, HHS: CDC
See Also: Drug Information and Biology & Chemistry
- Consultant Veterinary Medicine
- FDA Approved Animal Drug Products (Green Book), HHS
- IVIS: International Veterinary Information Service
- Merck Veterinary Manual
- OMIA: Online Mendelian Inheritance in Animals, University of Sydney (Australia) and NIH: NLM
- Zoological Record [On-site Access Only]
Last Reviewed: March 5, 2026