About this information
This NHS content is written for people in England. Medicine names, availability, prescribing and services may differ in other countries.
Cautions with other medicines
Some medicines can increase the chances of you having side effects with cetirizine.
Check with your pharmacist or doctor if you're taking any medicine that makes you drowsy, gives you a dry mouth, or makes it difficult for you to pee. Taking cetirizine might make these side effects worse.
View the original NHS website page ↗. Refreshed 19 August 2026.
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