Two cases of bilateral moderate to severe sensorineural hearing loss due to
oral administration of metronidazole are reported. There has been only one
case report of deafness following metronidazole therapy in the world liter
ature. The hearing loss recovered gradually in a period of four to six week
s following withdrawal of drug and oral steroid therapy. The possible mecha
nism of ototoxicity is discussed. Awareness by the treating physician of ot
otoxicity due to any drug is stressed.