6 doctors weighed in:

How much antihistamine for allergic reaction?

6 doctors weighed in
Dr. Michael Zacharisen
Internal Medicine - Allergy & Immunology
5 doctors agree

In brief: depends on product

For children over 12 years old, the usual dose for Claritin and zyrtec is 10 mg a day, for xyzal (levocetirizine) and Clarinex 5 mg a day, while the dose for Allegra is 180 mg once a day or 60 mg twice a day.
Pediatric doses are based on age rather than weight. There are dose adjustments for liver and kidney disease.

In brief: depends on product

For children over 12 years old, the usual dose for Claritin and zyrtec is 10 mg a day, for xyzal (levocetirizine) and Clarinex 5 mg a day, while the dose for Allegra is 180 mg once a day or 60 mg twice a day.
Pediatric doses are based on age rather than weight. There are dose adjustments for liver and kidney disease.
Dr. Michael Zacharisen
Dr. Michael Zacharisen
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