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Cetirizine hydrochloride is given orally at 10 mg per day or 5 mg twice a day for adults and children 6 years and older. There was no additional benefit seen in increasing dose of cetirizine hydrochloride to 20 mg.
Or as prescribed by the physician.
Hepatic impairment (patients with liver problems or disease). The dose should be reduced to half their usual dose per day.
Renal impairment (patients with kidney problems or disease). The dose should be reduced to half their usual dose per day.
Seasonal Rhinitis: It is recommended that cetirizine hydrochloride be given at the beginning of the hay fever season when pollens are still few.
Cetirizine Hydrochloride may be administered with or without food as it will not affect absorption of the drug.
Missed Dose: If the patient misses a dose, do not take a double dose to make up for a forgotten dose, just resume the schedule and go on as before.
