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  1. About | Leander ISD

    Together with the Leander and Cedar Park Chambers of Commerce, the Leander Educational Excellence Foundation (LEEF) annually hosts the Leander ISD (LISD) State of the District event, a …

  2. 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 human overdoses …

  3. LSD | Definition, Psychological Effects, & Ergot Fungus ...

    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 laboratory.

  4. 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,...

  5. 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 substances that …

  6. WHAT IS LSD? Lysergic acid diethylamide is a potent hallucinogen that has a high potential for misuse and currently has no accepted medical use in treatment in the United States.

  7. 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 success in an …