1
using more of a substance to experience similar high
2
negative symptoms when not using a substance
3
increases nervous system activity
4
decreases nervous system activity
5
mimics a neurotransmitter
6
blocks a neurotransmitter
7
depressant, ex: morphine, heroine
8
synthetic stimulant, mild hallucinogen
9
hallucinogen, also known as acid
10
active ingredient in marijuana
11
stimulant, increased body function and mood changes
12
stimulating drug in tobacco
13
stimulant, increased alertness and euphoria
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