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drugs which excite neural activity and speed up body functions (such as caffeine, nicotine, cocaine, ecstasy, and powerful amphetamines


drugs which reduce neural activity and slow body functions ( like alcohol, barbituates, opiates)


opium and its derivatives (morphine and heroin); depress neural activity, temporarily lessening pain and anxiety


drugs that depress the activity of the central nervous system, reducing anxiety but impairing memory and judgement


drugs that stimulate neural activity, causing faster body functions and associated energy and mood changes


a powerfully addictive drug that stimulates the central nervous system; faster body functions and mood/energy changes; appears to reduce baseline dopamine levels over time


also known as hallucinogens; chemicals which alter perceptions and mood


a mild hallucinogen which can cause impaired memory, increased risk of psychological disorders, and lung damage


a depressant which lowers inhibitions, slows neural processing, disrupts memory formation, and reduces self-awareness


a powerful hallucinogenic drug commonly known as acid


also known as ecstasy; a stimulant


Psychedelic drugs like LSD

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