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  1. LSD - Wikipedia

    Lysergic acid diethylamide, commonly known as LSD (from German Lysergsäurediethylamid) and by the nicknames acid and lucy, is a semisynthetic hallucinogenic drug derived from ergot, known for its …

  2. 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 LSD,...

  3. 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.

  4. LSD - Alcohol and Drug Foundation

    Key facts about LSD, its effects, and risks. Learn about its appearance, common forms, and impact on mental health. Knowledge to stay safe.

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

    Mar 23, 2026 · LSD, potent synthetic hallucinogenic drug that can be derived from the ergot alkaloids of the fungus Claviceps purpurea. LSD is prepared by chemical synthesis in a laboratory.

  6. History of LSD: Accidental Discovery, Recreational Use to Microdosing ...

    Jul 15, 2025 · What Is LSD? LSD, or lysergic acid diethylamide, is a synthetic chemical compound used recreationally for its mood-altering and psychedelic effects. Classified as a Schedule I drug under the …

  7. The First LSD Trip Was a Literal Bicycle Ride 83 Years Ago. Fans of the ...

    Apr 17, 2026 · The First LSD Trip Was a Literal Bicycle Ride 83 Years Ago. Fans of the Psychedelic Celebrate the Occasion Every April 19 In 1943, a chemist in Switzerland synthesized a drug that …

  8. The Secret History of LSD in Psychiatry - Psychology Today

    3 days ago · Many of us know only one side of the story of psychedelic therapy. In the 1950s and early 1960s, psychiatrists gave LSD and mescaline to patients struggling with depression, anxiety, and …

  9. What Is LSD Drug? Effects, Dangers & Key Facts Explained

    Mar 3, 2026 · LSD, or lysergic acid diethylamide, is a potent hallucinogenic drug known for its ability to drastically alter perception, mood, and thought. It is synthesized from lysergic acid, which is found in …

  10. Clinical Research on Lysergic Acid Diethylamide (LSD) in Psychiatry and ...

    Lysergic acid diethylamide (LSD) is gaining renewed interest as a potential treatment for anxiety, depression, and alcohol use disorder, with clinical trials reporting significant symptom reductions and …