A member asked:

Can you take zyrtec (cetirizine) twice daily?

A doctor has provided 1 answer

Most likely: If you are taking zyrtec (cetirizine) once a day and it does not make you significantly sleepy, you will be fine. A number of conditions are treated with zyrtec (cetirizine) or other antihistamines more than once a day and this is widely accepted.

Answered 6/16/2018

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