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  1. LSD - Wikipedia

    Lysergic acid diethylamide, commonly known as LSD (from German Lysergsäure-diethylamid) and by the slang names acid and lucy, is a semisynthetic, hallucinogenic compound derived …

  2. LSD: Effects, Risks, Tips, and More - Healthline

    May 27, 2020 · LSD — casually known as acid — is a powerful hallucinogenic drug made from lysergic acid, a fungus that grows on grains like rye. You might also hear it referred to as …

  3. LSD (Acid): Effects, Hazards & Extent of Use - Drugs.com

    LSD (lysergic acid diethylamide), first synthesized in 1938, is an extremely potent hallucinogen. Hallucinations are when you see, hear, feel, taste, or smell something that seems real but is not.

  4. LSD - DEA.gov

    What is LSD? Lysergic acid diethylamide (LSD) is a potent hallucinogen that has a high potential for abuse and currently has no accepted medical use in treatment in the United States.

  5. LSD: What to Know - WebMD

    LSD (lysergic acid diethylamide), also called “acid,” is a type of synthetic and mind-altering substance (psychedelic). This belongs to a class of drugs called hallucinogens. When you take...

  6. LSD: Everything You Need to Know | TripSafe.org

    Lysergic acid diethylamide (LSD) is a common recreational drug. It is also commonly known as acid. LSD is usually consumed on small pieces of paper called blotter. LSD has been taken by …

  7. LSD - Alcohol and Drug Foundation

    What is LSD? LSD (lysergic acid diethylamide) is a psychedelic drug, which means it can affect all senses, altering a person’s thinking, sense of time and emotions. Psychedelics can cause a …

  8. LSD: Effects and hazards - Medical News Today

    May 24, 2023 · Lysergic acid diethylamide, commonly known as LSD, is a hallucinogenic drug. It is illegal in most countries. LSD can affect vision, emotions, thinking, and more. Swiss chemist …

  9. LSD | Definition, Psychological Effects, & Ergot Fungus | Britannica

    Jul 2, 2025 · LSD, potent synthetic hallucinogenic drug that can be derived from the ergot alkaloids (as ergotamine and ergonovine, principal constituents of ergot, the grain deformity …

  10. How LSD Is Used to Treat Mental Health, and What LSD Is - GoodRx

    Aug 21, 2023 · LSD is a psychedelic drug that causes changes in mood and perception. When combined with therapy, LSD has shown promise for treating several mental health conditions, …