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Overdose and Treatment: Following accidental overdosage, the stomach should be emptied immediately by inducing emesis or by gastric lavage, followed by administration of activated charcoal.
Vital functions should be monitored and supported.
Hemodialysis is of little value since mefenamic acid and its metabolite are firmly bound to plasma proteins.
Seizures, acute renal failure, coma, confusion state, vertigo, and hallucination have been reported with mefenamic acid overdoses. Overdose has led to fatalities.
