Signs and symptoms of overdose: Overdose of Cetirizine hydrochloride (Benadryl One) (180 mg) caused restlessness, irritability and drowsiness in an 18-month old child. In adults, drowsiness, upon ingestion of 150 mg Cetirizine hydrochloride (Benadryl One) has been reported.
A case of a hypokalemic dialyzed patient with chronic renal failure, was reported to develop symptomatic episodes of torsades de pointes after overdosage with Cetirizine hydrochloride (Benadryl One).
What to do when the patient has taken more than the recommended dosage: Consult the doctor if patient has taken more than the recommended dosage.
                                
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