Find patient medical information for Cetirizine (Zyrtec) on WebMD including its uses, side effects and safety, interactions, pictures, warnings, and user ratings Zyrtec (cetirizine) treats seasonal and year-round allergy symptoms—sneezing, runny nose, itchy eyes, and hives. Many people feel relief within an hour. Once-daily dosing covers about 24 hours for most adults. Less than Benadryl, but cetirizine still sedates some people—test on a workday before assuming you are immune. Cetirizine treats cold or allergy symptoms such as sneezing, itching, watery eyes, or runny nose. Includes cetirizine side effects, interactions and indications. What do Zyrtec products treat? Zyrtec products are commonly used to treat allergy symptoms such as runny nose, itchy/watery eyes, sneezing, or an itchy nose or throat. The main active ingredient. Zyrtec (cetirizine) is used to treat allergy symptoms such as sneezing, itching, watery eyes, or runny nose. Includes Zyrtec side effects, interactions and indications. Zyrtec (Cetirizine) may treat, side effects, dosage, drug interactions, warnings, patient labeling, reviews, and related medications including drug comparison and health resources. Get allergy relief with ZYRTEC® Antihistamine Tablets with 10 mg Cetirizine HCl. These allergy tablets help relieve your indoor & seasonal allergy symptoms. Find powerful 24-hour relief from allergies & indoor & outdoor symptoms with the help of ZYRTEC® products. Explore here to find allergy tips, info & products. Cetirizine (Zyrtec) is an antihistamine. It's used for relief of allergy symptoms, such as runny nose or watery eyes, in adults and children. Cetirizine (Zyrtec) is also a safe option for people who are pregnant. This medication is available in different formulations, including tablets and liquid solutions. Typically, cetirizine (Zyrtec) is taken by mouth once per day. The most common side. Zyrtec (cetirizine) for allergic rhinitis and hives: 10 mg adult dosing, pediatric dose ranges, drowsiness notes, interactions, and country prices.