United States Drug Enforcement Administration

Hallucinogens are among the oldest known group of drugs used for their ability to alter human perception and mood.

Acid, Fry, Mind Candy, Mushrooms, Shrooms, Special K, STP, X, Ecstasy (or XTC

The most commonly abused hallucinogens such as psiliocybin-containing mushrooms, LSD, and MDMA (ecstasy) are typically taken orally or smoked.

Physiological effects include elevated heart rate, increased blood pressure, dilated pupils, and often can induce nausea and vomiting.

Serious psychological harm can occur after administration. Effects such as fear, depression, anxiety, and paranoia can occur and be long-lasting. Deaths exclusively from acute overdose of LSD, psilocybin-containing mushrooms, mescaline and other hallucinogens are less common. Deaths generally occur due to suicide, accidents, dangerous behavior, inadvertently eating poisonous plant material, or poly-substance use.

A severe overdose of PCP or ketamine can result in:

• Respiratory depression, coma, convulsions, seizures, and death due to respiratory arrest