Cigarettes and nicotine
www.nida.nih.gov/Infofax/tobacco.html

Crack and cocaine
www.nida.nih.gov/Infofax/cocaine.html

Ecstasy
www.nida.nih.gov/Infofax/ecstasy.html

Heroin
www.nida.nih.gov/Infofax/heroin.html

Inhalants
www.nida.nih.gov/Infofax/inhalants.html

LSD
www.nida.nih.gov/Infofax/lsd.html

Marijuana
www.nida.nih.gov/Infofax/marijuana.html

Methamphetamine
www.nida.nih.gov/Infofax/methamphetamine.html

Pain medications
www.nida.nih.gov/Infofax/PainMed.html

PCP
www.nida.nih.gov/Infofax/pcp.html

Rohypnol (Roofies) and GHB
www.nida.nih.gov/Infofax/RohypnolGHB.html

Steroids
www.nida.nih.gov/Infofax/steroids.html