The present invention is directed to the use of nifuratel, or a physiologically acceptable salt thereof, to treat infections caused by bacteria species of the genus Clostridium. The invention is further directed to the use of nifuratel to treat Clostridium difficile infection (CDI) and in particular Clostridium difficile associated diarrhoea (CDAD).本發明係有關於硝呋太爾(nifuratel)或其生理上可接受之鹽用於治療因細菌梭菌(Clostridium)屬種所引起的任何感染。本發明更係有關於硝呋太爾用於治療艱難梭菌(Clostridium difficile)感染(CDI)及更特別為艱難梭菌相關聯的腹瀉(CDAD)。