Lysergic acid diethylamide (LSD), also known as acid, is a hallucinogenic drug. Effects typically include altered thoughts, feelings, and awaren3ess of one’s surroundings. Many users see or hear things that do not exist. Dilated pupils, increased blood pressure, and increased body temperature are typical. Effects typically begin within half an hour and can last for up to 12 hours.It is used mainly as a recreational drug and for spiritual reasons.
Distressing flashbacks might occur in spite of no further use, a condition called hallucinogen persisting perception disorder. Death is very rare as a result of LSD, though it occasionally occurs in accidents.