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Smell, taste, form, texture...place a bit on tin foil, gently heat the underside of the foil and if it melts into a dark tar which smells like chemicals and fish...its most likely heroin. If you aren't sure if someone's on heroin...look at their eyes. Most drugs dilate ('blow out') the pupils. Heroin constricts ('pins out') the pupils.

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14y ago

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