cialis online reviews PubMed literature searches were conducted in March 2011 for papers containing combinations of MPH based studies search terms methylphenidate, Biphentin, Concerta, Daytrana, Equasym, Focalin, Medikinet, Metadate, Methylin, Ritalin and AMF based studies search terms amfetamine, Adderall, Dexedrine, Dextrostat, lisdexamfetamine