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Piriteze One A Day Tablets - 7 Tablets

Piriteze One A Day Tablets - 7 Tablets

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  • ✔️ Provides up to 24-hour relief from hay fever symptoms
  • ✔️ Contains cetirizine 10mg, a clinically proven antihistamine
  • ✔️ Non-drowsy formula suitable for daytime use
  • ✔️ Relieves sneezing, itching, runny nose, and watery eyes
  • ✔️ Suitable for adults and children aged 6 and over

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What Are Cetirizine One a Day Tablets?

 

Piriteze One A Day Tablets are a trusted, clinically proven antihistamine used to relieve the symptoms of hay fever, allergic rhinitis, hives (urticaria), and other allergic reactions. Each tablet contains cetirizine hydrochloride 10mg — a second-generation antihistamine that provides up to 24 hours of symptom relief from a single daily dose. Whether you're struggling through pollen season or reacting to pet dander, these tablets are designed to get you through the day with minimal disruption. You can browse our full range of allergy and hay fever treatments if you need additional support alongside your antihistamine.

Piriteze is manufactured by Haleon (formerly GSK Consumer Healthcare) and is available over the counter without a prescription. The 7-tablet pack is ideal if you need short-term relief during a particularly bad allergy spell, or if you're trying cetirizine for the first time. At just £2.49, it's an accessible option for managing everyday allergy symptoms without a GP visit.

 

How Do Piriteze One A Day Tablets Work?

 

Cetirizine works by selectively blocking histamine H1 receptors throughout the body. When you're exposed to an allergen — pollen, dust mites, animal fur — your immune system releases histamine, which binds to these receptors and triggers the familiar cascade of sneezing, itching, watery eyes, and nasal congestion. By occupying those receptors first, cetirizine prevents histamine from doing its damage.

  • Cetirizine is absorbed rapidly after oral ingestion, with peak plasma concentration reached within one hour.
  • It has a long half-life of approximately 8–10 hours, which supports once-daily dosing.
  • Unlike first-generation antihistamines such as chlorphenamine, cetirizine has limited penetration of the blood-brain barrier, making it significantly less sedating for most people.
  • Effects typically begin within 20–60 minutes of taking the tablet and last for up to 24 hours.

 

Who Should Use Piriteze One A Day Tablets?

 

Piriteze is suitable for a wide range of people dealing with allergic conditions. It's particularly useful during hay fever season, but it's equally effective for year-round allergies triggered by indoor allergens. If you experience itchy, red, or watery eyes alongside your other symptoms, you might also want to explore our eye care range for targeted relief.

  • Adults and adolescents aged 12 and over experiencing hay fever or allergic rhinitis
  • Children aged 6–11 years (under adult supervision, at the appropriate dose)
  • People with chronic idiopathic urticaria (persistent hives without a clear cause)
  • Those who need a non-drowsy antihistamine that won't interfere significantly with daily activities

 

How Does Piriteze Compare to Other Antihistamine Tablets?

 

Feature Piriteze (Cetirizine 10mg) Clarityn (Loratadine 10mg)
Active ingredient Cetirizine hydrochloride Loratadine
Dosing frequency Once daily Once daily
Drowsiness risk Low (possible in some) Very low
Onset of action 20–60 minutes 1–3 hours
Suitable for children 6 years and over 2 years and over (syrup)

 

Is Piriteze Suitable for Long-Term Use and How Should It Be Stored?

 

Cetirizine one a day tablets can be used for extended periods under the guidance of a pharmacist or GP, particularly for people with perennial (year-round) allergic rhinitis or chronic urticaria. Clinical evidence supports its safety profile for continuous use, though it's always worth reviewing your treatment periodically with a healthcare professional.

Store Piriteze One A Day Tablets below 25°C in a dry place, away from direct sunlight. Keep the pack out of reach and sight of children. Do not use the tablets after the expiry date printed on the packaging. If you're unsure whether this product is right for you, speak to your pharmacist before starting.

This product is a medicine. Speak to your doctor or pharmacist before using if you have an underlying medical condition or are taking other medicines.

Piriteze One A Day Tablets - 7 Tablets specifications
Treatment category Allergy / Antihistamine
Mechanism of action Selective H1 histamine receptor antagonist
Effective for Hay fever, allergic rhinitis, urticaria, allergic conjunctivitis
Suitable for Adults and children aged 6 and over
Active ingredient Cetirizine hydrochloride 10mg
Pack size 7 tablets
Strength 10mg
UK classification General Sale List (GSL)
Drug class Second-generation antihistamine
Preparation Film-coated tablet
Route of administration Oral

Specifications of Piriteze One A Day Tablets - 7 Tablets

 

What Is Piriteze and What Is It Used For?

 

Piriteze One A Day Tablets contain cetirizine hydrochloride 10mg, a second-generation antihistamine used to relieve symptoms caused by allergic conditions. It is indicated for the treatment of hay fever (seasonal allergic rhinitis), perennial allergic rhinitis, and chronic idiopathic urticaria (hives). Symptoms it relieves include sneezing, a runny or blocked nose, itchy and watery eyes, itchy skin, and rashes. According to the NHS, antihistamines like cetirizine are one of the most commonly recommended treatments for hay fever and allergic reactions.

 

What Do You Need to Know Before Using Piriteze?

 

Before taking Piriteze, it's important to check whether it's appropriate for you. Do not take this medicine if any of the following apply:

  • You are allergic to cetirizine hydrochloride, hydroxyzine, or any other ingredient in the tablet
  • You have severe kidney (renal) impairment
  • You are under 6 years of age
  • You are pregnant or breastfeeding (consult your doctor first)
  • You have epilepsy or a condition that increases your risk of seizures

The following medicines may interact with cetirizine. Always tell your pharmacist or doctor what you are taking:

  • Alcohol — may increase the risk of drowsiness
  • Other antihistamines — avoid combining, as this increases side effect risk
  • Sedatives, sleeping tablets, or CNS depressants — may enhance sedative effects
  • Theophylline (at high doses) — may slightly reduce cetirizine clearance

 

How Should You Use Piriteze One A Day Tablets?

 

Always take Piriteze exactly as described in this leaflet or as directed by your pharmacist. Do not exceed the stated dose. The tablet should be swallowed whole with a glass of water and can be taken with or without food.

  1. Remove one tablet from the blister pack.
  2. Swallow the tablet whole with a full glass of water — do not crush or chew.
  3. Take once daily, at the same time each day if possible.
  4. Do not take more than one tablet in any 24-hour period.
  5. If symptoms persist beyond 7 days without improvement, consult your pharmacist or GP.
Indication Age Group Dose Frequency
Hay fever / Allergic rhinitis Adults & children 12+ 10mg (1 tablet) Once daily
Hay fever / Allergic rhinitis Children 6–11 years 5mg (half tablet) Once daily
Chronic urticaria (hives) Adults & children 12+ 10mg (1 tablet) Once daily
Renal impairment (mild–moderate) Adults 5mg (half tablet) Once daily (seek advice)

 

What Are the Possible Side Effects of Piriteze?

 

Like all medicines, Piriteze can cause side effects, although not everyone gets them. Most side effects are mild and resolve on their own. If you experience anything severe or unexpected, stop taking the tablets and seek medical advice promptly. People managing multiple allergy symptoms may also find it helpful to explore our ear, nose, and throat range for complementary relief options.

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

  • Drowsiness or fatigue
  • Dry mouth
  • Headache
  • Dizziness
  • Nausea or stomach discomfort

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

  • Agitation or restlessness
  • Paraesthesia (tingling or pins and needles)
  • Blurred vision
  • Difficulty urinating
  • Skin rash or itching (paradoxical allergic reaction — stop use and seek advice)

 

How Should You Store Piriteze One A Day Tablets?

 

Correct storage helps maintain the effectiveness and safety of your tablets. Follow these instructions carefully:

  • Store below 25°C in a cool, dry place
  • Keep away from direct sunlight and moisture
  • Do not store in the bathroom or near a sink
  • Keep out of the reach and sight of children
  • Do not use after the expiry date printed on the carton or blister strip
  • Do not dispose of medicines via wastewater or household waste — return unused tablets to your pharmacy

If you have any further questions about this medicine, ask your pharmacist. You can also find additional allergy support products in our allergy and hay fever collection.

Written and reviewed by our qualified team

Your safety and success are our highest priorities. Our medical team rigorously evaluates every product and piece of advice we provide, ensuring you receive only the most effective, science-backed solutions available.

Frequently Asked Questions

Where can I buy Piriteze One A Day Tablets online in the UK?

You can buy Piriteze One A Day Tablets directly from Cured Pharmacy, a GPhC-registered UK online pharmacy. The 7-tablet pack is available for just £2.49 with convenient home delivery. You'll also find a wide selection of related products in our allergy and hay fever collection.

How do Piriteze One A Day Tablets work in the body?

Piriteze contains cetirizine hydrochloride, which works by selectively blocking H1 histamine receptors. When your body encounters an allergen, it releases histamine — cetirizine prevents histamine from binding to these receptors, stopping allergy symptoms before they take hold. Effects typically begin within 20 to 60 minutes of taking the tablet and last for up to 24 hours.

How do I take Piriteze One A Day Tablets step by step?

Take one tablet once daily, swallowed whole with a glass of water. You can take it with or without food, and at any time of day that suits your routine. Never take more than one tablet in a 24-hour period.

What is the best time of day to take Piriteze?

There is no single "best" time — Piriteze can be taken morning or evening depending on your preference. Many people take it in the morning to ensure full daytime coverage during high-pollen periods. If you find it causes mild drowsiness, switching to an evening dose may suit you better.

Can Piriteze One A Day Tablets cause drowsiness?

Cetirizine is classified as a non-drowsy antihistamine, but a small proportion of users do experience mild drowsiness. If you are affected, you should avoid driving, cycling, or operating heavy machinery. Alcohol can increase the risk of drowsiness, so it's best avoided while taking this medicine.

Who is eligible to take Piriteze One A Day Tablets?

Piriteze is suitable for adults and children aged 6 years and over. It is not recommended for children under 6, people with severe kidney impairment, or those with a known allergy to cetirizine or hydroxyzine. If you are pregnant, breastfeeding, or taking other medicines, speak to your pharmacist or GP before use.

What happens if I miss a dose of Piriteze?

If you forget to take your tablet, take it as soon as you remember — unless it is nearly time for your next scheduled dose. In that case, simply skip the missed dose and continue as normal. Never take two tablets at once to compensate for a missed one.

How does Piriteze compare to loratadine (Clarityn)?

Both cetirizine (Piriteze) and loratadine (Clarityn) are second-generation antihistamines taken once daily. Cetirizine tends to have a faster onset of action and may be more effective for some people, while loratadine has a marginally lower risk of causing drowsiness. Your pharmacist can help you decide which is more appropriate for your symptoms.

How long can you take Piriteze One A Day Tablets for?

Piriteze can be used short-term during allergy season or longer-term for conditions like chronic urticaria, under the guidance of a pharmacist or GP. If you have been taking it for more than a few weeks without improvement, it's worth reviewing your treatment. Always follow the advice of your healthcare professional regarding duration of use.

Can I take Piriteze if I am pregnant or breastfeeding?

The NHS advises that cetirizine is not usually recommended during pregnancy, particularly in the first trimester, unless a doctor has assessed the benefits and risks. It can pass into breast milk in small amounts, so breastfeeding women should seek medical advice before taking it. Always consult your GP or midwife if you are unsure.

Can children take Piriteze One A Day Tablets?

Children aged 6 to 11 years can take half a tablet (5mg) once daily under adult supervision. Children aged 12 and over can take the full adult dose of one tablet (10mg) daily. Piriteze is not suitable for children under 6 years of age — speak to your pharmacist about age-appropriate alternatives.

What are the side effects of Piriteze and how do I manage them?

The most common side effects include drowsiness, dry mouth, headache, and fatigue. Most are mild and settle on their own. Staying well hydrated can help with dry mouth, and taking the tablet in the evening may reduce the impact of any drowsiness during the day. If side effects are persistent or severe, stop taking the tablets and speak to your pharmacist.

Does Piriteze interact with any other medicines?

Cetirizine can interact with alcohol, other antihistamines, sedatives, and CNS depressants — all of which may increase drowsiness. High doses of theophylline may also slightly affect how cetirizine is processed in the body. Always tell your pharmacist about any other medicines, supplements, or herbal remedies you are taking before starting Piriteze.

What are the alternatives to Piriteze for hay fever?

Alternatives to Piriteze include other antihistamines such as loratadine and fexofenadine, as well as nasal corticosteroid sprays like beclometasone. For eye symptoms, antihistamine eye drops may provide targeted relief — explore our eye care range for options. Your pharmacist can advise on the most suitable treatment based on your specific symptoms.

What does the latest research say about cetirizine for allergies?

Cetirizine has been extensively studied since its introduction and remains one of the most widely recommended antihistamines in clinical guidelines. Research consistently supports its efficacy and safety for both seasonal and perennial allergic rhinitis, as well as chronic urticaria. It continues to be recommended by the NHS as a first-line treatment for these conditions.

How Should You Use Piriteze One A Day Tablets?

Piriteze One A Day Tablets are straightforward to use, but it's important to follow the instructions carefully to get the most from your treatment. Always read the patient information leaflet supplied with your pack before starting. If you have any questions, your pharmacist is the best person to ask.

Follow these steps each time you take your tablet:

What Is the Correct Dose of Piriteze One A Day Tablets?

The correct dose depends on your age and the condition being treated. Always follow the dosage guidance below and never exceed the recommended amount. If you are unsure about the right dose for a child, speak to your pharmacist before administering.

When Is the Best Time to Use Piriteze One A Day Tablets?

Piriteze can be taken at any time of day — morning, afternoon, or evening — whichever fits best into your daily routine. Because it provides up to 24 hours of coverage from a single dose, timing is flexible. However, if you find the tablet causes mild drowsiness, taking it in the evening before bed is a sensible approach, as any sedative effect will occur while you sleep rather than during the day.

For hay fever sufferers, taking your tablet in the morning before heading outdoors can help ensure you're protected during peak pollen hours, which are typically mid-morning and early evening according to the NHS.

How Long Can You Use Piriteze One A Day Tablets For?

For seasonal hay fever, most people take Piriteze throughout the pollen season — typically spring and summer — and stop once symptoms resolve. For chronic conditions such as perennial allergic rhinitis or chronic idiopathic urticaria, longer-term use may be appropriate under the supervision of a GP or pharmacist.

If your symptoms have not improved after 7 days of use, or if they worsen at any point, stop taking the tablets and seek advice from your pharmacist or GP. Regular review of your treatment is always a good idea, particularly if you have been taking antihistamines continuously for several months.

Do not exceed the recommended dose. If in doubt, speak to your pharmacist.

What Are the Most Common Side Effects of Piriteze One A Day Tablets?

Most people tolerate Piriteze well, and side effects are generally mild when they do occur. Cetirizine is a second-generation antihistamine, which means it is far less likely to cause drowsiness than older antihistamines like chlorphenamine. That said, it's not entirely free of side effects, and it's worth knowing what to look out for.

  • Drowsiness or fatigue
  • Dry mouth
  • Headache
  • Dizziness
  • Nausea or stomach discomfort
  • Pharyngitis (sore throat)

What Are the Less Common Side Effects of Piriteze One A Day Tablets?

Less common side effects affect fewer people but are still worth being aware of. If you notice any of the following, consider speaking to your pharmacist, particularly if the symptom is persistent or troublesome.

  • Agitation or restlessness
  • Paraesthesia (tingling or pins and needles)
  • Blurred vision
  • Difficulty urinating (urinary retention)
  • Palpitations
  • Abnormal liver function (rare — seek medical advice if you develop jaundice)
  • Skin rash or itching (paradoxical hypersensitivity — stop use immediately)

What Are the Serious Side Effects of Piriteze One A Day Tablets?

Serious side effects from cetirizine are rare but can occur. Anaphylaxis (a severe allergic reaction) is a medical emergency. Seek immediate medical attention — call 999 — if you experience any of the following after taking Piriteze:

  • Sudden swelling of the face, lips, tongue, or throat
  • Difficulty breathing or swallowing
  • Rapid heartbeat combined with dizziness or collapse
  • Severe skin reaction such as blistering or peeling

What Should You Do If You Experience Side Effects of Piriteze?

For mild side effects such as dry mouth or headache, these often resolve without any action needed. Drinking plenty of water can help with dry mouth, and taking the tablet in the evening may reduce the impact of any drowsiness during waking hours. If a side effect is bothering you or does not go away, stop taking the tablets and speak to your pharmacist or GP. You can also report side effects directly to the MHRA via the Yellow Card scheme at yellowcard.mhra.gov.uk.

Can Piriteze One A Day Tablets Interact With Other Medicines?

Yes, cetirizine can interact with certain medicines and substances. The most clinically significant interactions include alcohol and other CNS depressants, which can increase the risk of drowsiness. Taking cetirizine alongside other antihistamines is not recommended, as this increases the likelihood of side effects without providing additional benefit. High doses of theophylline may slightly reduce the clearance of cetirizine from the body. Always inform your pharmacist or doctor of all medicines, supplements, and herbal remedies you are currently taking before starting Piriteze.

If you are concerned about any side effects, contact your pharmacist or GP immediately.

Patient Information Leaflet

Important - Before taking any medication, it is always important to read the Patient Information Leaflet (PIL)

Written and reviewed by our qualified team

GPhC Number: 2233073
Tarun Kumar

Reviewed by:

Tarun Kumar

Superintendent/ Clinical Lead

📖 Find out more about our team of medical content authors and how we ensure the accuracy of our content with our content guidelines.

Content last updated: 31 Mar 2025

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