Zyrtec: price, uses & cheaper substitutes

It can. Cetirizine is less sedating than older antihistamines like chlorpheniramine, but drowsiness is still its most common side effect. Take it at night if it affects you and avoid driving until you know how you react.

Yes, one 10 mg tablet a day can be taken daily during an allergy season or for chronic hives, as advised by your doctor. Stop and see a doctor if symptoms persist beyond a few weeks.

Avoid it. Alcohol adds to the drowsiness and can impair driving and coordination.

Yes, there is no interaction between cetirizine and paracetamol. Many cold tablets already contain both, so check labels to avoid doubling the antihistamine.