1. Can I take Cetirizine with food or alcohol?
Food does not affect how cetirizine works. Alcohol may increase drowsiness, so it is best to limit alcohol while taking it.
What is Cetirizine?
Cetirizine Hydrochloride 10mg Tablets are used to relieve symptoms of hayfever and other allergies. It works by blocking histamine, a substance your body releases during an allergic reaction. Reducing the effects of histamine, it helps ease allergy symptoms and improves comfort.
It can help with:
- Sneezing
- Runny or blocked nose
- Itchy, red, or watery eyes
Active ingredient: Cetirizine Hydrochloride
Who can take Cetirizine 10mg?
Cetirizine is suitable for:
- Adults
- Children aged 6 years and over
Speak to a doctor or pharmacist before taking cetirizine if you have kidney problems, are pregnant or breastfeeding, or are taking other medicines.
How to take Cetirizine 10mg Tablets
Adults and children over 12 years:
Take one tablet once daily
Children aged 6 to 12 years:
Take half a tablet twice daily (morning and evening)
Important information:
- Cetirizine is usually non-drowsy, but some people may feel sleepy. If this happens, avoid driving or operating machinery.
- Swallow the tablet with water.
- Do not exceed the recommended dose.
How to store Cetirizine
- Store at room temperature
- Keep in the original packaging
- Protect from moisture and heat
- Keep out of sight and reach of children
- Do not use after the expiry date
Some people may experience
- Sleepiness
- Dizziness
- Headache
- Nausea
- Diarrhoea
- Dry mouth
- Fatigue
Children may occasionally develop cold-like symptoms of the nose or throat.
If you experience severe symptoms or signs of an allergic reaction such as swelling of the face, lips, or throat, seek medical advice immediately.
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Frequently Asked Questions
2. Is Cetirizine non-drowsy?
Cetirizine is classed as a low-drowsiness antihistamine, but some people may still feel sleepy.
3. Can I take Cetirizine if I am pregnant or breastfeeding?
Speak to a doctor or pharmacist before using cetirizine during pregnancy or breastfeeding.
4. What should I do if I miss a dose?
Take the next dose at your usual time. Do not take a double dose to make up for a missed tablet.
5. What should I do if I take too much Cetirizine?
Contact a doctor or seek medical advice immediately if an overdose is suspected.
Our Clinical Authors
Written by
Omar El-Gohary
CEO & Superintendent Pharmacist | GPhC Registration: 2059792
Medically reviewed by
Jabbar Ali
MPharm Clinical Lead | GPhC Registration: 2205490
This page has been written by a registered UK pharmacist and reviewed by our clinical team to ensure it is accurate, clear and reflects current clinical guidance.
Last medically reviewed: 20 August 2026
Last updated: 21 August 2026