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Acid: Lsd Today
Read about the creation, first use, and history of LSD. From a book published by the Do It Now Foundation, this article provides background information on this hallucinogenic drug and includes an overview of its effects on users' brains...
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Drugs and the Brain: Lsd
This website includes a very brief overview of how LSD affects the brain and causes hallucinations. Also, there is a list of "common street names" and an explanation of LSD's "legal status" as a Schedule I drug.