General Overview
Cetirizine is an over-the-counter antihistamine used to relieve runny nose, sneezing, itchy/watery eyes, and hives. It causes less drowsiness compared to older antihistamines.
Medicine Information
Cetirizine
Cetirizine Hydrochloride
Educational information
Antihistamine / Anti-Allergic
Medicine Safety Disclaimer
This information is for educational purposes only and should not be used for self-diagnosis or self-treatment. Do not start, stop, or change any medicine without consulting a qualified doctor or pharmacist. In case of overdose, severe allergic reaction, breathing difficulty, swelling of the face/lips, unconsciousness, or severe side effects, seek emergency medical help immediately.
Composition
Cetirizine Hydrochloride IP
Strength
5 mg / 10 mg
Medicine Type
Tablet / Syrup
Brand Names
Okacet
Alerid
Cetzine
Zyrtec
Reported Uses
Used for seasonal allergic rhinitis, perennial allergic rhinitis, and chronic idiopathic urticaria (hives).
General Characteristics
Fast-acting, provides 24-hour relief from allergy symptoms with once-daily dosing.
General Mechanism of Action
Selectively antagonizes peripheral H1 receptors, blocking the action of histamine which is responsible for allergic reactions.
Storage Guidelines
Store below 25°C in a dry place. Protect from direct sunlight.
General Educational Notes
It is best taken in the evening to minimize daytime drowsiness. Avoid alcohol while taking this medicine.
Frequently Asked Questions
Does Cetirizine cause drowsiness?
Yes, although it is a second-generation antihistamine designed to be non-drowsy, it can still cause mild sleepiness in up to 10% of users.
Can children take Cetirizine?
Yes, cetirizine is widely used in pediatric patients, but dosage should be guided by age and body weight under a pediatrician's advice.