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A male asked:

Can a non drowsy antihistamine that had no side effects that i've noticed hurt you if u take 2 pills in 24hrs instead of 2?

1 doctor answer1 doctor weighed in
Dr. J. Lawrence Dohan
Dermatology 57 years experience
No: Which antihistamine? Why using it? Sometimes, for chronic urticaria, cetirizine [Zyrtec] is dosed at 3 a day . The official dose of these is 1 a day. Allegra and claritin are also sometimes used at double or triple dose.It is best if you consult a Dr before you take doses higher than usual.

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Last updated Jul 11, 2018

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