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  • Title: "Crystal dex:" free-base dextromethorphan.
    Author: Hendrickson RG, Cloutier RL.
    Journal: J Emerg Med; 2007 May; 32(4):393-6. PubMed ID: 17499693.
    Abstract:
    Dextromethorphan (DXM) is a common component of combination cold medications that has become a popular drug of abuse for young adults. Abusers of DXM have developed a simple acid-base extraction technique to "free-base," or extract, the DXM from the unwanted guaifenesin, coloring agents, sweeteners, and alcohol that are typically included in combination cold preparations. We report a case of DXM overdose after ingestion of this purified "Crystal Dex" and discuss the "Agent Lemon" and single-phase extraction techniques that are used to free-base the dextromethorphan.
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