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Tolerance to 3,4-methylenedioxymethamphetamine in rats exposed to single high-dose binges. Ann Emerg Med. Introduction Mephedrone 1- 4-methylphenyl methylaminopropanone, 4-methylmethcathinone, 4-MMC is a substituted phenethylamine, structurally a cathinone derivative that Pakistani massage Framingham powerful psychostimulant, entactogenic and hallucinogenic effects see Europol—EMCDDA, ; Schifano et al.
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