Zyrtec Cetirizine HCl is an antihistamine. Zyrtec contains Cetirizine hydrochloride blocks the actions of the naturally occurring chemical histamine in the body. Histamine, which is produced by the body can cause itching, sneezing, runny nose, and watery eyes. Antihistamines are used to relieve or prevent the symptoms of hay fever and other types of allergy.
Zyrtec (Cetirizine hcl) is used for Preventing or treating symptoms of hay fever and other upper respiratory allergies such as stuffy nose, runny nose, sneezing, itching of the nose and throat, and itchy, watery eyes. It is also used for preventing or treating chronic hives. Zyrtec Cetirizine is less likely than some other antihistamines to cause side effects such as drowsiness and dizziness. Zyrtec-D 12 Hour, Zyrtec-D contains an antihistamine cetirizine hydrochloride 5 mg and 24 hours decongestant pseudoephedrine hydrochloride 120 mg.