One case of overdose with azacitidine was reported during clinical trials. A patient experienced diarrhoea, nausea, and vomiting after receiving a single intravenous dose of approximately 290 mg/m2, almost 4 times the recommended starting dose.
The events resolved without sequelae, and the correct dose was resumed the following day.
In the event of overdosage the patient should be monitored with appropriate blood counts and should receive supportive treatment, as necessary.
There is no known specific antidote for azacitidine overdosage.
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