Cetirizine hydrochloride

Cetirizine hydrochloride (pronunciation: se-TIR-i-zeen HYE-droe-KLOR-ide) is an antihistamine used to relieve allergy symptoms such as watery eyes, runny nose, itching eyes/nose, sneezing, hives, and itching. It works by blocking a certain natural substance (histamine) that your body makes during an allergic reaction.

Etymology

The term "Cetirizine" is derived from the parent molecule hydroxyzine, a first-generation antihistamine. The "hydrochloride" part of the name refers to the type of salt that the cetirizine molecule has been bound to for stability and absorption in the body.

Usage

Cetirizine hydrochloride is used in the treatment of urticaria, rhinitis, and similar allergy symptoms. It is also used to help reduce itchy skin rash and hives. Its effects are usually felt within one hour and last for 24 hours.

Related Terms

Antihistamine: A type of medicine that blocks the effects of histamine, a substance in the body that is involved in allergic reactions.
Histamine: A compound that is released by cells in response to injury and in allergic and inflammatory reactions.
Hydroxyzine: A first-generation antihistamine of the piperazine class that is an H1 receptor antagonist.
Urticaria: A condition characterized by red, itchy welts on the skin that can occur as a result of an allergic reaction.
Rhinitis: Inflammation and swelling of the mucous membrane of the nose, resulting in a runny nose and stuffiness.