A male asked:
can i take zyrtec (cetirizine) in the morning then evening take clarinese for flu?
1 doctor answer
Dr. Kristin Sokol answered
11 years experience Allergy and Immunology
YES: Yes, taking 2 antihistamines within a 24 hour period will not cause harm. It might make you more thirsty than usual, so stay hydrated, especially if you have a cold.
Answered on Apr 24, 2018
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