This question has also been asked and answered here: Allegra vs Zyrtec: What's the difference?
Cetirizine is an antihistamine that reduces the natural chemical histamine in the body. Histamine can produce symptoms of sneezing, itching, watery eyes, and runny nose. It is used to treat cold or allergy symptoms such as sneezing, itching, watery eyes, or runny nose.
Cetirizine is also used to treat itching and swelling caused by hives.
For insect bites other meds could be more effective, however please check with a pharmacist/doc.
- Cetirizine Information for Consumers
- Cetirizine Information for Healthcare Professionals (includes dosage details)
- Side Effects of Cetirizine (detailed)
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