The National Institute on Drug Abuse provides information on commonly abused drugs including slang names, health effects, withdrawal symptoms, and possible styles of behavioral therapy.
The website
www.erowid.org contains additional information on commonly abused drugs and other lesser-known drug information. Users post information about DEA schedules for different drugs, dosing, and the ‘high’ experience. This website is a good resource for less traditionally known substances of abuse and the consequences of use from the perspective of the substance user and home chemist.