Nitrofurans are synthetic broad spectrum antimicrobial agents. The nitrofurans considered in this opinion are furazolidone, furaltadone, nitrofurantoin, nitrofurazone and nifursol. Nitrofurans are not authorised for use in food-producing animals in the European Union (EU), but furazolidone, nitrofurantoin and nitrofurazone may be used in human medicine. Nitrofurans share a nitrofuran ring which is coupled to a side-chain via an azomethine bond.