antipsychotic drug

NOUN
18 LETTERS · STARTS WITH A

antipsychotic drug is a valid 18-letter word worth 31 points in Scrabble and 35 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
A1N1T1I1P3S1Y4C3H4O1T1I1C3D2R1U1G2
1 + 1 + 1 + 1 + 3 + 1 + 4 + 3 + 4 + 1 + 1 + 1 + 3 + 0 + 2 + 1 + 1 + 2 =31 PTS
DOUBLE WORD → 62TRIPLE WORD → 93
MEANING

What does antipsychotic drug mean?