The peak effects of LSD typically occur within how many hours after onset?

The peak effects of LSD typically occur within how many hours after onset?

• A. 1-2 hours
• B. 2-4 hours
• C. 4-6 hours
• D. 6-8 hours

Answer: (B)

LSD reaches brain receptors quickly, so the peak psychedelic effects occur a few hours into the experience. After ingestion, effects usually begin about 20–90 minutes later, with the maximum intensity around two to four hours after onset. The intensity then gradually declines over the next several hours, and the whole experience typically lasts about 8–12 hours. Individual factors like dose, metabolism, and whether the stomach is full can shift the timing, but a two-to-four-hour peak after onset is the typical pattern.

LSD reaches brain receptors quickly, so the peak psychedelic effects occur a few hours into the experience. After ingestion, effects usually begin about 20–90 minutes later, with the maximum intensity around two to four hours after onset. The intensity then gradually declines over the next several hours, and the whole experience typically lasts about 8–12 hours. Individual factors like dose, metabolism, and whether the stomach is full can shift the timing, but a two-to-four-hour peak after onset is the typical pattern.