Letter: Alternating caffeine and stimulants.
D002110:Caffeine / Q000008:administration & dosage / Q000627:therapeutic use*; D002675:Child, Preschool; D003069:Coffee; D003913:Dextroamphetamine / Q000008:administration & dosage / Q000627:therapeutic use*; D006801:Humans; D006948:Hyperkinesis / Q000188:drug therapy*; D008297:Male
D003069:Coffee; D002110:Caffeine; D003913:Dextroamphetamine