d3Xo-fan
Bluelighter
I always wondered, how can some heroin be more potent than other? Like why is white heroin more potent than brown heroin? And what about black tar heroin? I mean they are all the same molecule, right? Diacetylmorphine. And I'm not talking purity here, let's just assume we have 100% pure white, brown and black tar heroin. How come there's a difference in strength?

Thank you 
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