LSD use appears to have peaked in 1967 and 1968, after which it tapered off.

Name: LSD use appears to have peaked in 1967 and 1968, after which it tapered off.
Brand: Quizplus
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Quizplus · Accepted Answer

This statement is true. According to historical data, LSD use reached its peak in the late 1960s and declined significantly in the following years due to increased legal restrictions and negative public perception of the drug.

LSD Use Appears to Have Peaked in 1967 and 1968