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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 even smaller amounts for microdosing. Despite widespread use, no fatal human overdoses …

  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

    Feb 12, 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. LSD - Meaning, Effects & Facts | HISTORY

    Jun 14, 2017 · LSD, or lysergic acid diethylamide, is a hallucinogenic drug that was first synthesized a Swiss scientist in the 1930s. During the Cold War, the CIA conducted clandestine experiments with …

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

    2 days ago · 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 …

  8. 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 produces …

  9. LSD: Stimulant or Depressant? Understanding Its Effects

    3 days ago · Conclusion LSD is a fascinating drug—it’s not just about tripping, it’s about understanding yourself. Whether you feel like a stimulant or a depressant depends on the dose and your mindset. …

  10. Clinical Research on Lysergic Acid Diethylamide (LSD) in ... - MDPI

    Mar 29, 2025 · 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 …