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Medical Definition of Methylamphetamine hydrochloride
1. D-Desoxyephedrine hydrochloride; d-N,alpha-dimethylphenethylamine hydrochloride, "speed";a sympathomimetic agent that exerts greater stimulating effects upon the central nervous system than does amphetamine; widely used by drug abusers via the oral and intravenous ("mainlining") routes; strong psychic dependence may develop. Synonym: methylamphetamine hydrochloride. (05 Mar 2000)