Zyrtec is an over-the-counter antihistamine used to relieve symptoms caused by allergies, such as sneezing, itching, watery eyes, runny nose, and itching or swelling caused by chronic urticaria (hives)[1][2][3][5][7].
It is commonly recommended for relieving:
- Itchy or watery eyes
- Sneezing
- Runny or stuffy nose
- Itching of the nose or throat
- Itching and swelling from hives (chronic urticaria)
Zyrtec helps manage symptoms associated with both seasonal allergic rhinitis (from pollen and other outdoor allergens) and perennial allergic rhinitis (from dust mites, pet dander, and molds)[1][3]. It works by blocking the effects of histamine, a substance in the body that causes allergy symptoms[2][4].
Zyrtec-D contains cetirizine with a decongestant (pseudoephedrine) and is used to relieve nasal congestion, sinus pressure, and restore easier breathing in addition to treating the typical allergy symptoms[1][6].
References
- [1] What Is ZYRTEC® & What is it Used For?
- [2] Cetirizine Tablets – Treats Allergy Symptoms – Cleveland Clinic
- [3] Cetirizine: Uses, Interactions, Mechanism of Action | DrugBank Online
- [4] Zyrtec vs. Claritin: What is the best antihistamine for allergies?
- [5] Zyrtec Uses, Dosage & Side Effects – Drugs.com
- [6] Cetirizine and pseudoephedrine (oral route) – Side effects & dosage
- [7] Zyrtec Oral: Uses, Side Effects, Interactions, Pictures … – WebMD