consciousness-altering drug

NOUN
27 LETTERS · STARTS WITH C

consciousness-altering drug is a valid 27-letter word worth 32 points in Scrabble and 42 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
C3O1N1S1C3I1O1U1S1N1E1S1S1-0A1L1T1E1R1I1N1G2D2R1U1G2
3 + 1 + 1 + 1 + 3 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 0 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 2 + 0 + 2 + 1 + 1 + 2 =32 PTS
DOUBLE WORD → 64TRIPLE WORD → 96
MEANING

What does consciousness-altering drug mean?