Hallucinogens are a diverse group of drugs that alter perception (awareness of surrounding objects and conditions), thoughts, and feelings. They cause hallucinations, or sensations and images that seem real though they are not. Hallucinogens can be found in some plants and mushrooms (or their extracts) or can be made by humans. People have used hallucinogens for centuries, mostly for religious rituals. Learn about the health effects of hallucinogens and read the DrugFacts.
Common Names
Ayahuasca, DMT, D-Lysergic Acid Diethylamide (LSD), Peyote (Mescaline), 4-Phosphoryloxy-N,N-Dimethyltryptamine (Psilocybin)
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Use the SAMHSA Treatment Locator or call 1-800-662-HELP (4357).
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Other Resources
- MEDLINEplus Health Information on Drug Abuse (National Library of Medicine, NIH)
- Healthfinder.gov (U.S. Department of Health and Human Services)
Clinical Trials
Clinical trials are research studies in human volunteers conducted to answer specific health questions. Learn about the NIH-sponsored clinical trials available to you.
- NIDA Clinical Trial Locator - answer a few simple questions and get contact information for Clinical Trials near you.