FC tablet: Single oral doses of metronidazole, up to 15 g have been reported in suicide attempts and accidental overdoses. Symptoms reported include nausea, vomiting, and ataxia. Oral Metronidazole has been studied as a radiation sensitizer in the treatment of malignant tumors. Neurotoxic effects, including seizures and peripheral neuropathy, have been reported after 5 to 7 days of doses of 6 to 10.4 every other day.
Treatment: there is no specific antidote for metronidazole overdose: therefore management of the patient should consist of symptomatic and supportive therapy.