Explanation:
Central nervous system depressants.
Central nervous system stimulants.
Opiates and Opiodes.
Hallucinogens.
Marijuana.
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Explanation:
Here are the five main categories and some information about each:
Central nervous system depressants.
Central nervous system stimulants.
Opiates and Opiodes.
Hallucinogens.
Marijuana.