De acordo com uma pesquisa no mais exaustivo fórum de mensagens sobre o fabrico de metanfetaminas da história (o arquivo Hive), a "droga Smurf" é o resultado dos bloqueadores de histamina: loperamida, clorfenimina e loratadina que não são removidos dos comprimidos de psuedoefedrina (possivelmente até mesmo dos comprimidos inteiros) e a utilização de ferro ou cobre pode provocar uma coloração esverdeada 
- By DirkDiggler
Como é que posso limpar os comprimidos desse ?
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- By mycelium
Cant a substance called norite (spelling)?
On the corner of Haight and Masonic Street at 2am, one of the chemists of the family told me how to clean amber or lavender crystal into white using norite to absorb color
I don't know why he told me, he was rambling, but I never forgot it, or him, and saw him at RFK stadium the next year with hair cut and no beard, a hat and sunglasses, all incognito,
On the corner of Haight and Masonic Street at 2am, one of the chemists of the family told me how to clean amber or lavender crystal into white using norite to absorb color
I don't know why he told me, he was rambling, but I never forgot it, or him, and saw him at RFK stadium the next year with hair cut and no beard, a hat and sunglasses, all incognito,
