What is the most commonly used hallucinogen in the United States?

LSD, or lysergic acid diethylamide, is the most commonly used hallucinogen in the United States. Its widespread use is attributed to its potent psychoactive effects, rapid onset, and relative accessibility compared to other hallucinogens. LSD has been a part of counterculture since the 1960s and remains popular among various demographics, particularly among young adults and in social settings like music festivals and raves.

Psychedelic mushrooms, while popular, do not have the same level of prevalence as LSD when considering overall usage trends. Mescaline, derived from peyote cacti, has a more limited usage primarily among specific indigenous cultures and some recreational users. PCP, though it has hallucinogenic properties, is primarily known as a dissociative and is not as commonly associated with recreational use in the same context as LSD. Therefore, LSD stands out as the most prevalent hallucinogen in contemporary American society.