n :  a racemic sympathomimetic amine C₉H₁₃N or one of its derivatives (as dextroamphetamine or methamphetamine) frequently abused as a stimulant of the central nervous system but used clinically esp. in the form of its sulfate or hydrochloride salt to treat hyperactive children and the symptoms of narcolepsy and as a short term appetite suppressant in dieting - see BENZEDRINE  .
 
   
 
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