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Cetirizine 10mg Tablets 30s

Cetirizine 10mg Tablets 30s

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  • ✔️ Relieves hay fever, hives, and allergic rhinitis symptoms effectively
  • ✔️ Non-drowsy formula suitable for daytime use
  • ✔️ Starts working within one hour of taking a dose
  • ✔️ Suitable for adults and children aged six and over
  • ✔️ Once-daily 10mg dose provides full 24-hour allergy relief

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What Are Cetirizine 10mg Tablets Used For?

 

If you've ever spent a spring morning sneezing uncontrollably or woken up with itchy, watering eyes, you'll know just how disruptive allergies can be. Cetirizine 10mg tablets are a widely used, non-drowsy antihistamine that helps relieve the symptoms of hay fever, allergic rhinitis, urticaria (hives), and other allergic reactions. Available over the counter without a prescription, they offer a convenient and affordable way to manage allergy symptoms day to day. You can browse our full range of allergy and hay fever treatments if you're looking for additional options alongside this product.

Each tablet contains 10mg of cetirizine hydrochloride as the active ingredient. This is the standard therapeutic dose for adults and children aged 6 and over, as recognised by the NHS. The 30-tablet pack gives you a full month's supply at the standard once-daily dose — practical for anyone managing seasonal or year-round allergies.

 

How Does Cetirizine Work as an Antihistamine?

 

When your body encounters an allergen — pollen, pet dander, dust mites — it releases a chemical called histamine. Histamine binds to receptors throughout the body and triggers the familiar cascade of allergy symptoms: sneezing, itching, a runny nose, and watery eyes. Cetirizine works by selectively blocking these H1 histamine receptors, preventing histamine from causing that reaction in the first place.

  • Cetirizine is a second-generation antihistamine, meaning it is less likely to cross the blood-brain barrier than older antihistamines like chlorphenamine.
  • It has a rapid onset of action, with symptom relief typically beginning within one hour of taking a dose.
  • Its effects last for approximately 24 hours, making once-daily dosing sufficient for most people.
  • Unlike first-generation antihistamines, it causes significantly less sedation in most users.

 

Who Is Cetirizine 10mg Suitable For?

 

Cetirizine 10mg tablets are suitable for a broad range of people dealing with allergic conditions. They are appropriate for adults and children aged 6 years and over. That said, they are not right for everyone — always read the label and check with your pharmacist if you are unsure.

  • Adults and teenagers experiencing seasonal hay fever or perennial allergic rhinitis
  • People with chronic idiopathic urticaria (persistent hives without a known cause)
  • Those with allergic reactions to pet dander, dust mites, or mould spores
  • Children aged 6 to 11 years (at a reduced dose — see dosage section)

 

How Does Cetirizine Compare to Other Antihistamines?

 

Feature Cetirizine 10mg Loratadine 10mg Chlorphenamine 4mg
Generation Second-generation Second-generation First-generation
Drowsiness risk Low (non-drowsy) Very low High (sedating)
Dosing frequency Once daily Once daily Up to 4 times daily
Suitable for children Age 6+ Age 2+ (syrup) Age 6+ (tablets)

 

How Should You Store Cetirizine 10mg Tablets?

 

Store your cetirizine 10mg tablets below 25°C in a dry place, away from direct sunlight and moisture. Keep them in their original packaging and out of the reach and sight of children. Do not use the tablets after the expiry date printed on the pack — if in doubt, return them to your local pharmacy for safe disposal.

It's worth noting that cetirizine 10mg tablets are classified as a Pharmacy (P) medicine in the UK, meaning they can be sold without a prescription but should be purchased from a registered pharmacy. If you're managing multiple allergy-related conditions, you might also find our eye care range helpful for treating allergic conjunctivitis alongside your antihistamine.

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.

Cetirizine 10mg Tablets 30s specifications
Treatment category Allergy & Hay Fever
Mechanism of action Selective H1 histamine receptor antagonist
Effective for Hay fever, allergic rhinitis, urticaria, allergic conjunctivitis
Suitable for Adults and children aged 6 years and over
Active ingredient Cetirizine hydrochloride 10mg
Pack size 30 tablets
Strength 10mg
UK classification Pharmacy (P) medicine
Drug class Second-generation antihistamine
Preparation Film-coated tablet
Route of administration Oral

Specifications of Cetirizine 10mg Tablets 30s

 

What Is Cetirizine and What Is It Used For?

 

Cetirizine hydrochloride 10mg is an antihistamine medicine used to relieve the symptoms of allergic conditions. It is licensed in the UK for the treatment of hay fever (seasonal allergic rhinitis), perennial allergic rhinitis, chronic idiopathic urticaria (hives), and allergic skin reactions. The NHS lists cetirizine as one of the recommended non-drowsy antihistamines for hay fever, alongside loratadine and fexofenadine.

It works by reducing the effects of histamine — the chemical your immune system releases when it encounters an allergen. Symptoms it can help relieve include sneezing, a blocked or runny nose, itchy and watery eyes, itchy skin, and rashes. It does not cure allergies, but it can make them significantly more manageable.

 

What Do You Need to Know Before Using Cetirizine?

 

Before taking cetirizine, it's important to check whether it is 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 — dose adjustment or medical supervision is required
  • You are pregnant or breastfeeding, unless advised by your doctor
  • Your child is under 6 years of age (tablets are not suitable; a liquid formulation may be more appropriate)
  • 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 about all medicines you are taking:

  • Alcohol and CNS depressants (may increase sedative effects)
  • Ritonavir (used in HIV treatment — may increase cetirizine levels in the blood)
  • Other antihistamines (avoid taking more than one at the same time)
  • Sedatives, sleeping tablets, or anxiolytics

 

How Should You Use Cetirizine 10mg Tablets?

 

Always take cetirizine exactly as directed on the label or as advised by your pharmacist. Do not exceed the stated dose. Here's how to take it correctly:

  1. Swallow one tablet whole with a glass of water.
  2. You can take it with or without food — it makes no difference to how well it works.
  3. Take it at the same time each day to maintain consistent symptom control.
  4. Do not crush or chew the tablet unless the packaging states it is suitable to do so.
  5. If you are giving it to a child aged 6–11, use the half-tablet dose as directed below.
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 (½ tablet) Twice daily
Urticaria (hives) Adults & children 12+ 10mg (1 tablet) Once daily
Renal impairment (mild–moderate) Adults 5mg (½ tablet) Once daily — seek medical advice

 

What Are the Possible Side Effects of Cetirizine?

 

Like all medicines, cetirizine can cause side effects, although not everyone experiences them. Most side effects are mild and tend to resolve on their own. If you're also managing skin-related allergy symptoms, our skin care range includes products that may complement your antihistamine treatment.

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 (more common in children)
  • Paraesthesia (tingling or pins and needles)
  • Blurred vision
  • Difficulty urinating
  • Skin rash or itching (paradoxical allergic reaction — stop taking and seek advice)

Serious allergic reactions (anaphylaxis) are rare but possible. Seek emergency medical help immediately if you develop swelling of the face, lips, tongue or throat, difficulty breathing, or a severe skin reaction.

 

How Should You Store Cetirizine 10mg Tablets?

 

Correct storage helps maintain the quality and effectiveness of your tablets throughout the pack. Follow these guidelines:

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

If you're looking for further support managing allergy-related symptoms beyond antihistamines, our ear, nose and throat range includes nasal sprays and decongestants that can be used alongside cetirizine for more complete relief.

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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 cetirizine 10mg tablets online in the UK?

You can buy cetirizine 10mg tablets directly from Cured Pharmacy, a GPhC-registered UK online pharmacy, for just £2.95 for a 30-tablet pack. No prescription is needed — they are available over the counter for adults and children aged 6 and over. Browse our full allergy and hay fever collection for related products.

How does cetirizine work in the body?

Cetirizine is a second-generation antihistamine that selectively blocks H1 histamine receptors throughout the body. When your immune system detects an allergen, it releases histamine — cetirizine prevents that histamine from binding to receptors and triggering allergy symptoms. This is why it relieves sneezing, itching, and a runny nose without causing significant sedation in most people.

What is the correct dose of cetirizine 10mg for adults?

The standard adult dose is one 10mg tablet taken once daily, with or without food. You should not take more than 10mg in a 24-hour period unless specifically directed by a doctor. If you have mild to moderate kidney impairment, your doctor may recommend a reduced dose of 5mg daily.

What is the best time of day to take cetirizine?

There is no single "best" time — the most important thing is to take it at the same time each day to maintain consistent levels in your system. Some people prefer taking it in the evening in case mild drowsiness occurs, while others take it in the morning to ensure daytime symptom control. Choose a time that fits your routine and stick to it.

Can cetirizine cause drowsiness?

Cetirizine is classified as a non-drowsy antihistamine, but a small number of people do experience mild drowsiness, particularly at the start of treatment. If you feel drowsy after taking it, avoid driving or operating heavy machinery until you know how it affects you. Alcohol can increase any sedative effect, so it is best avoided while taking this medicine.

Is cetirizine 10mg suitable for children?

Cetirizine 10mg tablets are suitable for children aged 6 years and over. Children aged 6 to 11 should take a reduced dose of 5mg (half a tablet) twice daily rather than the full 10mg adult dose. For children under 6, a liquid formulation is more appropriate — speak to your pharmacist for guidance.

What happens if I miss a dose of cetirizine?

If you forget to take a dose, take it as soon as you remember — unless it is nearly time for your next scheduled dose, in which case skip the missed one entirely. Never take two doses at the same time to compensate for a missed one. Missing an occasional dose is unlikely to cause any harm, but consistent daily use gives the best symptom control.

How long can you take cetirizine for?

Cetirizine can be taken throughout the allergy season — typically spring and summer for hay fever sufferers — or on a longer-term basis for perennial (year-round) allergies, under pharmacist or GP guidance. If your symptoms persist beyond a few weeks despite treatment, or if they worsen, it is worth speaking to your GP. There is no evidence of dependence with cetirizine, but long-term use should be reviewed periodically.

What are the alternatives to cetirizine 10mg tablets?

The main over-the-counter alternatives are loratadine 10mg and fexofenadine 120mg, both of which are also non-drowsy second-generation antihistamines. Chlorphenamine is another option but is sedating and requires more frequent dosing. Your pharmacist can help you decide which antihistamine suits your lifestyle and symptom pattern best.

Can I take cetirizine if I am pregnant or breastfeeding?

Cetirizine is not recommended during pregnancy unless your doctor has specifically advised it, as there is limited safety data available. It passes into breast milk in small amounts, so breastfeeding mothers should also seek medical advice before using it. Your GP or midwife can recommend the safest option for managing allergies during pregnancy.

Does cetirizine interact with any other medicines?

Cetirizine can interact with alcohol, other CNS depressants (such as sleeping tablets or sedatives), and ritonavir (used in HIV treatment). Taking it alongside other antihistamines is not recommended. Always tell your pharmacist about all medicines, supplements, and herbal remedies you are taking before starting cetirizine.

How quickly does cetirizine start working?

Most people notice symptom relief within one hour of taking cetirizine, with peak effect typically occurring within one to two hours. Its effects last for approximately 24 hours, which is why once-daily dosing is sufficient for most adults. Taking it before you expect allergen exposure — for example, before going outdoors during high pollen season — can help maximise its effectiveness.

Can I take cetirizine for skin allergies and hives?

Yes — cetirizine is licensed for the treatment of chronic idiopathic urticaria (persistent hives) as well as allergic skin reactions. It helps reduce itching, redness, and the appearance of wheals associated with hives. If your skin symptoms are severe or do not improve within a few days, consult your GP. You may also find our skin care range helpful for soothing irritated skin alongside antihistamine treatment.

What are the latest studies on cetirizine?

Cetirizine has been extensively studied since its introduction in the late 1980s and remains one of the most well-evidenced antihistamines available. Recent research continues to confirm its efficacy and safety profile for allergic rhinitis and urticaria in both adults and children. It is included in NHS and NICE guidance as a first-line treatment option for hay fever and allergic conditions.

How do I manage side effects of cetirizine?

Most side effects of cetirizine are mild and manageable. If you experience dry mouth, try sipping water regularly or chewing sugar-free gum. If drowsiness is a problem, try taking your tablet in the evening rather than the morning. Should you experience any serious side effects — such as difficulty breathing, severe rash, or swelling of the face — stop taking the medicine and seek urgent medical attention.

How Should You Use Cetirizine 10mg Tablets?

Cetirizine 10mg tablets are taken orally and should be swallowed whole with a full glass of water. They can be taken with or without food, so there is no need to plan your dose around mealtimes.

What Is the Correct Dose of Cetirizine 10mg Tablets?

The dose varies depending on age and the condition being treated. Always follow the dosage instructions on the pack or as directed by your pharmacist. Do not exceed the recommended daily dose.

When Is the Best Time to Use Cetirizine 10mg Tablets?

Cetirizine can be taken at any time of day, but consistency matters most. Taking it at the same time each day helps maintain steady levels in your bloodstream, which means more reliable symptom control throughout the day.

If you find that cetirizine makes you feel slightly drowsy, switching to an evening dose can help. On the other hand, if you need maximum daytime protection during high pollen periods, a morning dose may work better for you. Either way, the 24-hour duration of action means one tablet covers you for the full day.

How Long Can You Use Cetirizine 10mg Tablets For?

For seasonal hay fever, cetirizine is typically used throughout the pollen season — usually from late March to September in the UK, depending on which pollens trigger your symptoms. For perennial allergic rhinitis or chronic urticaria, longer-term use may be appropriate under the guidance of your pharmacist or GP.

There is no evidence that cetirizine loses effectiveness over time or causes dependence. However, if your symptoms are not adequately controlled after a few weeks, or if they worsen, it is worth seeking a medical review. Your doctor may recommend a different antihistamine, a nasal corticosteroid spray, or a referral to an allergy specialist.

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

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What Are the Most Common Side Effects of Cetirizine 10mg Tablets?

Cetirizine is generally well tolerated, and most people experience no side effects at all. However, as with any medicine, some people may notice mild reactions, particularly when they first start taking it.

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

What Are the Less Common Side Effects of Cetirizine 10mg Tablets?

Less common side effects affect fewer people but are still worth being aware of. If any of the following persist or become bothersome, speak to your pharmacist or GP.

  • Agitation or restlessness (particularly in children)
  • Paraesthesia (tingling or pins and needles)
  • Blurred vision
  • Difficulty urinating (urinary retention)
  • Palpitations
  • Abnormal liver function (very rare — detected via blood tests)
  • Paradoxical skin rash or itching

What Are the Serious Side Effects of Cetirizine 10mg Tablets?

Serious side effects are rare but require immediate medical attention. Stop taking cetirizine and seek emergency help if you experience any of the following:

  • Severe allergic reaction (anaphylaxis) — swelling of the face, lips, tongue, or throat
  • Difficulty breathing or swallowing
  • Severe skin reactions such as blistering or peeling
  • Seizures or convulsions
  • Rapid or irregular heartbeat

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

For mild side effects such as dry mouth or headache, these often resolve on their own within a few days as your body adjusts. Staying well hydrated and taking the tablet in the evening can help reduce the impact of any drowsiness. If side effects persist or are affecting your daily life, speak to your pharmacist — they may suggest an alternative antihistamine that suits you better.

If you experience a serious reaction, stop taking cetirizine immediately and call 999 or go to your nearest A&E. You can also report side effects directly to the MHRA via the Yellow Card scheme at yellowcard.mhra.gov.uk.

Can Cetirizine Interact With Other Medicines?

Cetirizine has relatively few drug interactions compared to older antihistamines, but some combinations should be avoided. Taking cetirizine alongside alcohol or other central nervous system (CNS) depressants — such as sleeping tablets, sedatives, or anxiolytics — can increase the risk of drowsiness and impaired coordination. Ritonavir, used in HIV treatment, may increase cetirizine blood levels and should be used with caution. Always inform your pharmacist or doctor of all medicines, supplements, and herbal remedies you are currently taking before starting cetirizine.

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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