Psychoactive drugs are classified into four major groups: stimulants, depressants, narcotics, and hallucinogens. Three other types of drugs – cannabis (marijuana), inhalants, and designer drugs – have the same effects as some drugs in the four major groups. Steroids are not considered psychoactive drugs but are abused for other reasons.
Stimulants are drugs that stimulate, or speed up, nerve activity. Nicknames include nicotine, cocaine, crack, coke, amphetamines (speed/uppers), methampheta
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