What are the four main groups of psychoactive drugs?

Answer 1

There are more than four classes of psychotropic medication:

1) Antidepressants (SSRIs, SNRIs, TCAs, MAOIs, and others)

2) Mood Stabilizers (Lithium, Anticonvulsant class mood stabilizers, SGAs)

3) Antipsychotics (Classical Antipsychotics, Atypical Antipsychotics)

4) Stimulants (Amphetamine products, Bupropion, Strattera and others)

5) Antianxiety medications (Benzodiazepiines, Buspar, Vistaril and others)

Answer 2

Stimulants, depressants, narcotics, hallucinogens.

Answer 3

stimulants, depressants, hallucinogens and opiates.

Correction:

Strike "opiates" and include narcotics.