Hallucinogens Health Effects
Hallucinogens can produce physiological effects including elevated heart rate, increased blood pressure, and dilated pupils. These drugs are often unpredictable and a user may experience different effects compared to other users or past usage. Users often experience changes in perception, thought, and mood.19
The effects of LSD are unpredictable. They depend on the amount of the drug taken; the user's personality, mood, and expectations; and the surroundings in which the drug is used. Usually, the user feels the first effects of the drug within 30 to 90 minutes of ingestion. These experiences last for extended periods of time and typically begin to clear after about 12 hours. The physical effects include dilated pupils, higher body temperature, increased heart rate and blood pressure, sweating, loss of appetite, sleeplessness, dry mouth, and tremors. Sensations may seem to "cross over" for the user, giving the feeling of hearing colors and seeing sounds. If taken in a large enough dose, the drug produces delusions and visual hallucinations.20
The effects of PCP use are unpredictable, can be felt within minutes of ingestion, and can last for many hours. Physical effects can include shallow, rapid breathing; increased blood pressure; elevated heart rate; and increased temperature. Nausea, blurred vision, dizziness, and decreased awareness can also occur. High doses of PCP can cause convulsions, coma, hyperthermia, and death.21 PCP is an addictive drug that can cause psychological dependence, cravings, and compulsive drug seeking behaviors.22
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Physical effects of psilocybin are usually experienced within 20 minutes of ingestion and can last for 6 hours. Negative physical symptoms of psilocybin use can include vomiting, muscle weakness, drowsiness, and panic reactions. Frequent use of this drug can result in the development of a tolerance.23
AMT and Foxy share many chemical and pharmacological characteristics with other Schedule I hallucinogens and produce similar effects.24
Dextromethorphan users describe a set of distinct dose-dependent "plateaus" ranging from a mild stimulant effect with distorted visual perceptions at low (approximately 2-ounce) doses to a sense of complete dissociation from one's body at doses of 10 ounces or more. The effects typically last for 6 hours.25
Of an estimated 106 million emergency department (ED) visits in the U.S. during 2004, the Drug Abuse Warning Network (DAWN) estimates that 1,997,993 were drug-related. DAWN data indicate that LSD was involved in 1,953 ED visits; PCP was involved in 8,928 visits; and miscellaneous hallucinogens were involved in 3,445 visits