Medically reviewed by Daniel More, MDMedically reviewed by Daniel More, MD Common side effects of Zyrtec (cetirizine) can ...

As an antihistamine, Zyrtec works by blocking the action of histamine, a substance in the body that contributes to symptoms ...

You may report side effects to FDA at 1-800-FDA-1088. Use Zyrtec Liquid Gels (Oral) exactly as directed on the label, or as prescribed by your doctor. Do not use in larger or smaller amounts or ...

Cetirizine HCl 5mg, pseudoephedrine HCl 120mg; ext-rel tabs. Hydroxyzine sensitivity. Narrow-angle glaucoma. Urinary retention. Severe hypertension or coronary artery disease. During or within 14 ...