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I do not condone illegal activities or use of medication. For informational purposes only, lean/sizzurp is made from prescription cough medication, which you already understand you cannot obtain. Hence, you cannot make true lean/sizzurp. Dextromethorphan is the active ingredient in many variations of OTC cough medication, like Robitussin. It is completely different from the opioid chemicals in lean/sizzurp. Dex produces effects more similar to hallucinogenics and at high levels is dissociative. Dissociatives are serious, and will cause a loss of touch with reality and self (ego death). Don't do that to try out a lil wayne recommended drink.