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).클로스트리디윰 속(屬)(genus Clostridium)의 하나 이상의 종(species)에 의해 유발되는 임의의 감염의 치료용도인 니푸라텔(Nifuratel) 또는 생리학적으로 허용가능한 그의 염이 개시된다.