acetaZOLAMIDE vs. acetoHEXAMIDE buPROPion vs. busPIRone chlorproMAZINE vs. chlorproPAMIDE clomiPHENE vs. clomiPRAMINE cycloSERINE vs. cycloSPORINE DAUNOrubicin vs. DOXOrubicin DOBUTamine vs. DOPamine hydrALAzine vs. hydrOXYzine TOLAZamide vs. TOLBUTamide vinBLAStine vs. vinCRIStine