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  1. LSD - Wikipedia

    LSD is extremely potent, with noticeable effects at doses as low as 20 micrograms and is sometimes taken in much smaller amounts for microdosing. Despite widespread use, no fatal …

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

    LSD is synthetically made from lysergic acid, which is found in ergot, a fungus that grows on rye and other grains. It is so potent its doses tend to be in the microgram (mcg) range. It's effects, …

  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 | Definition, Psychological Effects, & Ergot Fungus | Britannica

    Dec 31, 2025 · 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 …

  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. Substance use - LSD: MedlinePlus Medical Encyclopedia

    LSD affects the action of a brain chemical called serotonin. Serotonin helps control behavior, mood, the senses, and thinking. LSD is in a class of drugs called hallucinogens. These are …

  7. LSD Fast Facts - United States Department of Justice

    LSD (lysergic acid diethylamide) is a synthetic (man-made) drug that has been abused for its hallucinogenic properties since the 1960s. If consumed in a sufficiently large dose, LSD …

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

    Sep 29, 2025 · Learn what the LSD drug is, its effects on the brain, health risks, and key facts. Understand dangers and how treatment can help with LSD-related issues.

  9. LSD Guide: Explore History, Research, and Psychotherapy Uses

    Jan 22, 2025 · Our LSD guide explores its history, research breakthroughs, safety and effects, clinical trial findings, and psychotherapeutic applications. Here’s your ultimate LSD guide to …

  10. We'll learn about LSD's potential for treating anxiety in 2026

    Dec 30, 2025 · Two major trials investigating the potential of the psychedelic drug LSD for reducing anxiety are set to conclude in 2026. Scientists are feeling positive after the drug’s …