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Overview

Hayfever and allergies don’t have to take over your life. Cetirizine 10mg tablets provide fast, non-drowsy relief from sneezing, runny nose, itchy eyes, and congestion — so you can get back to focusing on what matters most. As the reliable generic version of Piriteze, Cetirizine offers the same trusted effectiveness at a lower cost, helping you breathe easier and feel more comfortable all day long.

This medicine requires a secure online consultation with a UK-registered prescriber, and will only be supplied if clinically appropriate.

 

What is Cetirizine 

Cetirizine hydrochloride is a trusted, modern antihistamine that works by blocking histamine — the chemical responsible for allergy symptoms like sneezing, itchy eyes and runny nose.

Whether it’s seasonal hay fever, everyday triggers like pets, dust or mould, or skin flare-ups such as hives (urticaria), cetirizine is designed to help you feel more comfortable and in control.

With relief that starts in as little as one hour and lasts for up to 24 hours from a single dose, you can get through your day without constant interruptions from allergy symptoms. And because it’s non-drowsy for most people, cetirizine lets you enjoy clear-headed, long-lasting protection you can rely on.

Directions

  • Adults and children aged 12+: One tablet daily with water
  • Take at the same time each day for consistent relief
  • Do not exceed the recommended dose
  • Can be taken with or without food
  • Always follow your prescriber’s advice.

Side Effects

Like all medicines, Cetirizine can cause side effects, although not everyone gets them. Most are mild, short-lived, and improve as your body adjusts.

Common (may affect up to 1 in 10 people):

  • Drowsiness – although Cetirizine is classed as a “non-drowsy” antihistamine, some people may still feel sleepy. If this happens, avoid driving or operating machinery until you know how it affects you.
  • Headache – mild headaches are fairly common and can often be managed with hydration, rest, or simple pain relief.
  • Dry mouth – you may notice a dry or uncomfortable feeling in your mouth. Drinking water often or chewing sugar-free gum can help.
  • Nausea – some people may feel mildly sick. Taking Cetirizine with food can sometimes reduce this effect.

Less common (may affect up to 1 in 100 people):

  • Stomach pain – occasional abdominal discomfort may occur but usually passes quickly.
  • Fatigue – some people feel more tired than usual, especially when starting treatment.
  • Dizziness – rarely, cetirizine can cause light-headedness. Rising slowly from sitting or lying down can help reduce this.
     


Rare but serious (seek urgent medical help):

  • Severe allergic reaction (anaphylaxis) – symptoms include swelling of the face, lips, tongue or throat, difficulty breathing, or a sudden rash. This is extremely rare but requires immediate emergency care.


Most people tolerate Cetirizine well, and side effects (if they do occur) are generally mild and temporary. If you are concerned about symptoms, or they do not improve, speak to your doctor, pharmacist, or prescriber.

Disclaimer: This is not a complete list of side effects. Always read the patient information leaflet that comes with your medicine for full details. If you experience severe or worrying symptoms, seek medical advice straight away. In an emergency, call 999 or go to A&E.

Warnings

Cetirizine may not be suitable if you:

  • Are allergic to cetirizine or related antihistamines
  • Have severe kidney impairment
  • Are pregnant or breastfeeding (seek advice first)
  • Are taking other sedating medicines (may increase drowsiness)

FAQ's

Is Cetirizine the same as Piriteze?
Yes — they contain the same active ingredient and are equally effective. Cetirizine is simply the unbranded, lower-cost version.

How fast does Cetirizine work?
Most people feel relief within an hour of taking a tablet.

Does Cetirizine make you sleepy?
It’s classed as non-drowsy, though a small number of people may still feel tired.

Can I take Cetirizine every day?
Yes, during allergy season or for persistent symptoms — but always use the lowest effective dose.

Can children use Cetirizine?
Yes — lower doses are available for children under 12. Follow your prescriber’s advice.

Can Cetirizine help with skin allergies?
Yes, it’s commonly used to manage itching and hives (urticaria).