American Association of Poison Control Centers
Cornell University Poisonous Plants Informational Database
Dietary Supplement Quality Initiative
The initiative provides information to help people make informed decisions about dietary supplements.
MD Anderson - Integrative Medicine Program
Up to data reviews on the evidence and safety for the use of herbs, supplements, vitamins and minerals as well as other complementary medicine modalities.
Medical Herbalism: Poisonous Plants Links
National Center for Toxicological Research , FDA
National Injury Information Clearinghouse
Poison Control Centers
Poisonous Plant Databases
The Poisonous Plant database provides access to references in the scientific literature (primarily print literature through about 2007) describing studies and reports of the toxic properties and effects of plants and plant parts.