This is one of the flaws with prohibition... you lose all effective authority to regulate the prohibited product. We'll see how well it works in Germany, but i

This is one of the flaws with prohibition... you lose all effective authority to regulate the prohibited product. We'll see how well it works in Germany, but in the United States, such a program would plainly be nothing more than an intelligence asset for cops. For that reason dealers would order their customers to refrain from using it, and would exact retribution upon those who did. Besides, trailer park meth cooks aren't really capable of producing a safe, unadulterated product in measured doses. They don't have the competence or the resources to do that. But addicts still need the product regardless. Do you even get to keep your meth if the state-run quality control lab says that it has too much rat poison? Why would an addict risk getting it confiscated for their own safety? Just legalize the crap and sell it out of liquor stores in plain retail packaging manufactured by pharmaceutical corporations who have some cap on the profits they're allowed to earn over cost.