A member asked:

What's the best time of day to take zyrtec (cetirizine)?

A doctor has provided 1 answer
Dr. Liawaty Ho answered

Specializes in Hematology and Oncology

Individualized: When i take zyrtec (cetirizine), (cetirizine) i feel sleepy. Thus, i take my zyrtec (cetirizine) at night time so it will not interrupt my daily activity. Some other people don't experience any drowsiness/sleepiness- then they can take any time they want.

Answered 3/17/2020

5.3k views

Thank

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