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A street slang term for a Ritalin & DXM cocktail with dissociative and hallucinogenic effects similar to PCP or some dirty ass MDMA. Arn can come in Capsules or colorful tablets with stamps pictures and logos. Arn is extremely dangerous because it is usually cut with other substances such as MDMA, cocaine, heroin or another psychedelic. Arn is sometimes sold as other drugs like Ecstasy (MDMA), LSD, Ketamine or even PCP, so users who think they are buying these drugs often don't know what they're actually getting. Not much is known about the use of Arn and there are no reports of any deaths from the drug.
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