Cetirizine (Cetzine, Alerid): uses, dose & side effects
Written & medically reviewed by Dr. Sanjay Anbu, MBBS· Last reviewed
Cetirizine is a common antihistamine for allergies — sneezing, runny nose, itching and hives. It causes less drowsiness than older antihistamines, though some people still feel sleepy.
Doses are a general reference, not a prescription. Doses shown are typical adult/paediatric references and vary with age, weight, kidney/liver function and the exact product. Paediatric doses are usually weight-based and must be set by a doctor. MedDroid cannot prescribe — always confirm cetirizine and your dose with a doctor or pharmacist and the leaflet inside the pack.
Frequently asked questions
Cetirizine or levocetirizine?
Levocetirizine is a refined form and may be slightly less sedating for some. Both work well; response varies.
Can I take cetirizine daily?
Many take it daily in allergy seasons and it is generally safe, but discuss long-term daily use with a doctor.
Reviewed by Dr. Sanjay Anbu, MBBS. MedDroid is an AI medical assistant and can make mistakes. It provides general health information, not a diagnosis or medical advice — always consult a qualified clinician. In an emergency, contact your local emergency number immediately.