呋喃西林是具有广谱抗菌的药物。它对革兰氏阳性菌及阴性菌在5～10μg/ml 浓度时有抑制作用,在20～50μg/ml 浓度时有杀灭细菌作用。在使用磺胺噻唑或青霉素产生耐药性时它仍有一定的抗菌作用。本品内服时常出现头晕、呕吐、药疹等不良反应,目前很少应用。外科常以本品0.02%溶液作为粘膜表面消毒药,用于脓性腔道冲洗、中耳 Nitrofurazone is a broad-spectrum antimicrobial drug. It is Gram-positive bacteria and negative bacteria at concentrations of 5 ~ 10μg / ml inhibitory effect, at 20 ~ 50μg / ml concentration to kill bacteria. In the use of sulfathiazole or penicillin resistance when it still has some antibacterial effect. This product is often orally taken dizziness, vomiting, drug eruption and other adverse reactions, rarely used. Surgical often 0.02% solution of the product as a mucosal surface disinfectant for purulent canal irrigation, middle ear