polar , weak base and is lipophilic . [ 24 ] Formulations Dextroamphetamine sulfate Dexamphetamine Sulphate 5 mg tablets (AU) A tablet preparation of the salt dextroamphetamine sulfate (brand names: Dexedrine or Dextrostat ) is available in 5 mg and 10 mg strengths [ n 2 ] in the United States. Dextroamphetamine sulfate