About cetirizine
Cetirizine is an antihistamine that doesn't usually cause drowsiness when used at the standard dose. It is licensed for treating chronic urticaria at a dose of 10 mg daily in adults and young people aged over 12 years, 5 mg twice daily in children aged 6−12 years, and 2.5 mg twice daily in children aged 2−6 years. Use of higher doses of cetirizine is off-label.
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