Learn about cetirizine (Zyrtec) usage and dosing. Read the latest news and reviews about the drug as well as potential side effects and popular alternatives. What it is: Cetirizine (Zyrtec)—second-generation antihistamine for hay fever and hives. Typical dose: 10 mg once daily; 5 mg may suffice for mild symptoms or kidney impairment. Yes, generic versions of Zyrtec are available. The patent for Zyrtec expired in 2007. Zyrtec (cetirizine hydrochloride) is a nonprescription antihistamine. It is used to prevent or treat symptoms of hay fever and to treat cold or allergy symptoms such as sneezing, itching, watery eyes, or runny nose. Zyrtec 24 Hour Allergy Medicine Tablets, 10 mg Cetirizine HCl Antihistamine, 30 Count 15655 Overview: Cetirizine is an antihistamine that is taken to help treat allergy symptoms, such as a runny nose, itchy or watery eyes, sneezing, or an itchy nose or throat. It may also be used to. Zyrtec is used in adults and children to treat cold or allergy symptoms such as sneezing, itching, watery eyes, or runny nose. Zyrtec is also used to treat itching and swelling caused by chronic urticaria (hives). Cetirizine is the generic form of Zyrtec, an antihistamine commonly used to relieve sneezing, a runny nose, itchy or watery eyes and hives. Discover the same powerful allergy relief as Zyrtec with our cetirizine hydrochloride tablets. Enjoy 24-hour relief from sneezing, runny nose, and itchy eyes. Zyrtec (cetirizine) provides rapid symptom relief for seasonal/perennial allergic rhinitis and hives. It is generally well tolerated; however, mild drowsiness can occur in some patients compared with fexofenadine or loratadine. Find Zyrtec generic options like Cetirizine and Levocetirizine in 10mg, 5mg, and more. Discover softgels, chewables, and dissolving tablets for affordable 24-hour allergy relief for adults and children.