All day allergy (cetirizine) 10 mg tablet color: Webfeb 26, 2024 · generic zyrtec. Used for allergic rhinitis, hives. Cetirizine (zyrtec) is an antihistamine. It's used for relief of allergy symptoms, such as runny nose or watery. Allergy relief (cetirizine) 10 mg tablet color: Webpill identifier results for 4h2. Search by imprint, shape, color or drug name.