Which one of the following is a hallucinogenic drug?
Opium
Caffeine
Morphine
Lysergic acid diethylamide
Correct answer: Lysergic acid diethylamide
Solution
Lysergic acid diethylamide (LSD) is a classic hallucinogen that alters perception, mood, and thought. The other options are an opioid source, a stimulant, and an opioid analgesic, respectively.