Chemical and Drug Information from the National Library of Medicine

Starting Points

ChemIDplus - Chemical Identification Plus
Dictionary of over 380,000 chemicals (names, synonyms, structures)
Includes links to NLM databases and other resources
  • ChemIDplus Advanced
    • Includes structure search and display for over 260,000 chemicals

    • Lists of chemicals of interest to government agencies (part of ChemIDplus)
Drug Information Portal
Gateway to drug information from the National Library of Medicine and other key government agencies. Covers over 15,000 drugs from entry into clinical trials through entry in the market place.

Search TOXNET for:

All TOXNET Databases
Household Products Database



More NLM Resources for Health Professionals


Databases on hazardous chemicals, environmental health, and toxic releases

TOXLINE - Toxicology Literature Online

Over three million references from the toxicology literature, including MEDLINE/PubMed, research in progress, and meeting abstracts.

HSDB - Hazardous Substances Data Bank

Comprehensive, peer-reviewed toxicological data for over 5000 chemicals.
Excerpts from published literature on:
  • Chemical/Physical Properties
  • Chemical Safety and Handling
  • Human Health Effects and Emergency Medical Treatment
  • Animal Toxicity Studies
  • Environmental Fate and Exposure
  • Environmental and Occupational Standards and Regulations


Links jobs and hazardous tasks with occupational diseases and their symptoms

Dietary Supplements Labels Database

Contains information from the labels of over 2,000 brands of dietary supplements in the marketplace, including vitamins, minerals, herbs or other botanicals, amino acids, and other specialty supplements.


Geographic representation of TRI data with links to other TOXNET resources

TRI - Toxics Release Inventory

Annual environmental releases on over 600 toxic chemicals by U.S. facilities


Database of drugs to which breastfeeding mothers may be exposed. Covers
  • maternal and infant drug levels
  • possible effects on infants
  • alternate drugs to consider

Toxicology Tutorials

Three college level tutorials covering the principles of toxicology, toxicokinetics, and cellular toxicology.

MEDLINE/PubMed Toxicology Subset

References to biomedical journals
  • When you click on the above PubMed link, you will be searching in the Toxicology subset, not the entire MEDLINE/PubMed database


Meta-search and clustering engine for environmental health and toxicology information

More NLM Resources for the Public and Students

Household Products Database - Potential health effects of chemicals in 6000+ common household products

Household Products Database

Potential health effects of chemicals in 7000 common household products
Tox Town - Interactive guide to potentially toxic substances and environmental health issues in everyday places

Tox Town

Interactive guide to toxic substances and environmental health issues in everyday places
MedlinePlus - Consumer health resource with information on over 700 health topics, including toxicology and environmental health


Consumer health resource containing links to authoritative information on over 700 health topics, including drugs,toxicology, and environmental health

Last updated: 17 March 2008
First published: 17 May 2005
Metadata| Permanence level: Permanence Not Guaranteed