A member asked:

I am on zyrtec (cetirizine) and flonase for severe hayfever. neither should cause drowsiness but i feel severely tired&like i almost have to be reminded to breathe?

A doctor has provided 1 answer
Dr. John Chiu answered

Specializes in Allergy and Immunology

Not true: Zyrtec (cetirizine) can cause significant drowsiness in up to 10% of the people.

Answered 5/3/2018



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