Forensic Toxicology

MedlinePlus - Drug Abuse 

MedlinePlus - Prescription Drug Abuse

Medscape Reference
Scroll down to Toxicology

Michigan eLibrary - Health and Wellness Resource Center Database 

National Institute on Drug Abuse 

Office of National Drug Control Policy
See "Initiatives" for information on Prescription Drug Abuse, Marijuana, and Methamphetmine.

U.S. National Laboratory of Medicine - Toxnet
Hazardous Substances Data Bank (HSDB)