Paracetamol is toxic in overdose but the dose at which toxicity becomes apparent is disputed. In the past, the dose at which toxicity may become apparent has been 125 mg/kg/day, but more recently this has been revised upwards to 150 mg/kg/day in children (1). In children it has been proposed that toxicity does not develop following single ingestions of up to 200 mg/kg/day (2).