Answer
May 11, 2026 - 09:08 AM
Zyrtec (cetirizine) can be taken either in the morning or at night, depending on your symptoms and how it affects you. Some people prefer taking it at night because it can cause drowsiness, while others take it in the morning if it doesn't make them sleepy. It's best to choose the time that fits your routine and minimizes side effects.
