Three people talking in group therapy

Hallucinogens

Psychoactive drugs like hallucinogens are known for altering your perception of reality. While most are not addictive, they can all pose serious health risks.
Woman in surreal landscape
What Are the Different Types of Hallucination?
Medically reviewed by Steven Gans, MD
Model poses as daydreaming woman in bed under white blanket
Phencyclidine Use Disorder Symptoms and Dangers
Medically reviewed by Daniel B. Block, MD
drug addict sleeping on the bus station
Effects and Risks of Methoxetamine
Medically reviewed by Steven Gans, MD
Model poses as young woman looking over her shoulder
People Can Have Delusions From Using Drugs and Psychosis
Medically reviewed by Steven Gans, MD
Woman underwater with mirrored perspective
How People Who Use Acid Develop Hallucinogenic Flashbacks
Medically reviewed by John C. Umhau, MD, MPH, CPE
spray can
Signs That May Indicate an Inhalant Use Disorder
Medically reviewed by Steven Gans, MD
Man Lighting a Joint
How Dissociative Drugs Distort a Users Perception
Medically reviewed by John C. Umhau, MD, MPH, CPE
Khat for sale at market.
Khat: Everything You’ve Been Afraid to Ask
Medically reviewed by Steven Gans, MD
Male floating in clouds in landscape at sunset
Why People Take Hallucinogens
Medically reviewed by Steven Gans, MD
Woman in water holding a clear cube full of goldfish
The Different Effects of Hallucinogens on Your Body
Medically reviewed by Shaheen Lakhan, MD, PhD, FAAN
Male face silhouetted in sky as if a hallucination
7 Examples of Hallucinogenic Drugs
Medically reviewed by John C. Umhau, MD, MPH, CPE
Four tabs of acid, or LSD (lysergic acid diethylamide)
5 True Bad Acid Trip Stories
Medically reviewed by Steven Gans, MD
Ecstasy pills in a person's hand
Other Hallucinogen Use Disorder Symptoms
Medically reviewed by Steven Gans, MD
PCP Pills
PCP: Everything You’ve Been Afraid to Ask
Medically reviewed by Steven Gans, MD
Psilocybin mushrooms
How Long Does Psilocybin (Mushrooms) Stay in Your System?
Medically reviewed by Daniel B. Block, MD
Drug, pill, syringes and heroin on wooden table, drug abuses
How Dissociative Drugs Effect You
Medically reviewed by Steven Gans, MD
Bottles of poppers
The Side Effects and Dangers of Poppers
Medically reviewed by Steven Gans, MD
Woman sitting on sofa and thinking
LSD Effects Can Last Hours and Is Detectable on Drug Screening Tests
Medically reviewed by Steven Gans, MD
Man Taking a Pill
Figuring out How Long DMT Stays in Your Body by Test
Fact checked by Andrea Rice
Peyote (Lophophora williamsii) cactus
Peyote: Everything You’ve Been Afraid to Ask
Medically reviewed by Steven Gans, MD
Distorted reality
What You Need to Know About Hallucinogen Persisting Perception Disorder
Medically reviewed by Daniel B. Block, MD
Peyote (Lophophora williamsii), Cactaceae.
How Long Mescaline Stays in Your System
Fact checked by Andrea Rice
Young man and woman man smoking marijuana
What Is a Contact High?
Medically reviewed by Steven Gans, MD
Crowd of people at concert waving arms in the air
How Long Does MDMA (Ecstasy) Stay in Your System?
Medically reviewed by Steven Gans, MD
LSD Molecule
How Psychedelic or Hallucinogenic Drugs Work
Medically reviewed by Steven Gans, MD
close up of nervous person's hands
LSD: Everything You’ve Been Afraid to Ask
Medically reviewed by Steven Gans, MD
PCP Pills
How Long PCP Remains in Your System Depends on These Variables
Medically reviewed by Steven Gans, MD
Young oman admiring glowing lights in sky
Understanding the Acid Trip Experience
Medically reviewed by Steven Gans, MD
Scared girl experiencing a bad trip at home alone
What Is a Bad Trip? Psychedelic Drugs Can Induce Fear or Distress
Medically reviewed by Steven Gans, MD
Model poses as man in a k hole
The Risks of Taking Ketamine Can Mean Experiencing a K Hole
Medically reviewed by Steven Gans, MD
Smiling woman on dandelion meadow
5 Myths and Truths About LSD
Medically reviewed by Steven Gans, MD
Four caps of acid, or LSD (lysergic acid diethylamide)
Why Was the Acid Drug or LSD Created?
Fact checked by Emily Swaim
Male hand holding recreational drugs
5 Myths About MDMA Debunked
Medically reviewed by Daniel B. Block, MD
Psilocybe cubensis 'Magic Mushrooms'
Magic Mushrooms: Everything You've Been Afraid to Ask
Medically reviewed by Steven Gans, MD
Male chemist holds test tube of glass in hi
Designer Drugs Can Be the Most Unpredictable Type of Substance
Medically reviewed by Steven Gans, MD
LSD Molecule
The Different Effects of the Types of Psychedelic Drugs
Medically reviewed by Steven Gans, MD
Peyote harvest cactus with mescaline inside it
Mescaline: Everything You’ve Been Afraid to Ask
Medically reviewed by Steven Gans, MD
woman drinking bloody mary cocktail
How Psychoactive Drugs Change Someone's Mental State
Medically reviewed by Steven Gans, MD
Ecstasy (MDMA) tablets white
Ecstasy Drug Information and History
Reviewed by David Susman, PhD