作者指出:长期采用硝基呋喃增高机体对維生素的需要量,特别是复合維生索B。近来測定出:每日按0.6克呋喃西林服用三日,能降低維生索B_(12),在人体內的含量。认为:这是由于硝基呋喃对参加所致成維生素B_(12)的大腸杆 The authors point out that the long-term use of nitrofurans to increase the body’s vitamin requirements, especially the composite living cable B. Recently measured: daily 0.6 nitrofurantoin taken three days, can reduce the vitamin B_ (12) in the human body content. It is believed that this is due to the participation of nitrofurans into the large intestine resulting in vitamin B_ (12)