Relate

Zyrtec 

Allergies; Allergy/Allergies; Anaphylaxis 

Cetirizine hydrochloride (marketed as Zyrtec, or Zirtek in the United Kingdom) is a medication used for the treatment of allergy, hayfever, angioedema, and hives. It is a second-generation H1-receptor antagonist antihistamine and works by blocking H1 histamine receptors. It is a major metabolite of hydroxyzine, and has the same basic side effects.

An allergy is a immune malfunction whereby a person's body is hypersensitised to react immunologically to typically nonimmunogenic substances. When a person is hypersensitised these substances are known as allergens. The word allergy derives from the Greek words allos meaning "other" and ergon meaning "reaction" or "reactivity". Reactions can vary from the benign runny nose, to life-threatening anaphylactic shock and death.


Cetirizine as related to Allergy