Propizepina, Vagran 50 Kapseln, Propizepine, Propizepinum, Nafcillin, Propizepinum [INN-Latin], 6-(2-Ethoxy-naphth-1-yl-formamino)penicillansaeure, Propizepina [INN-Spanish], (2-ethoxy-naphthalen-1-yl)-penicillin, 6-(2-dimethylamino-propyl)-6,11-dihydro-benzo[b]pyrido[2,3-e][1,4]diazepin-5-one