National Clearinghouse for Alcohol and Drug Information (NCADI): PREVLINE
The Substance Abuse and Mental Health Services Administration (SAMHSA) .
NCADI is a service of SAMHSA and the Department of Health and Human Services. This site is a great place to do drug-specific research, containing fact sheets, research, databases, and resources on specific drugs of abuse geared to diverse audiences. Information on this site is primarily targeted at families, youth, schools, workplaces, and the community. There is additional information on the site about RADAR, CSAP's Regional Alcohol and Drug Awareness Resource Network.