Blotter acid is a term commonly used to refer to LSD, a powerful hallucinogenic drug that can alter perception, mood, and thought processes. While blotter acid has become the most popular slang term associated with LSD, there are other synonyms used to describe this potent substance. Some of these include tabs, cid, Lucy, acid, and dots. Additionally, Lysergic acid diethylamide is the scientific name of the drug, which is a synthetic compound synthesized from ergot fungus. Regardless of the name used, the potential for dangerous side effects, including psychosis, remains a serious concern when using LSD.