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Clarityn Allergy 10 Tablets

Clarityn Allergy 10 Tablets

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  • ✔️ Relieves hay fever sneezing, itching, and runny nose
  • ✔️ Non-drowsy formula suitable for daytime use
  • ✔️ Once-daily loratadine 10mg tablet for 24-hour relief
  • ✔️ Suitable for adults and children aged 6 and over
  • ✔️ Effective for both seasonal hay fever and year-round allergies

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What Are Clarityn Allergy 10 Tablets — loratadine 10mg tablets?

 

If sneezing fits, itchy eyes, and a constantly runny nose are making your day miserable, you are not alone. Hay fever affects around one in five people in the UK, and allergic reactions to dust mites, pet dander, and mould can cause similar misery year-round. Clarityn Allergy 10 Tablets contain loratadine 10mg tablets, a well-established, non-drowsy antihistamine that helps bring those symptoms under control without leaving you feeling foggy or tired. You can browse the full range of treatments in our allergy and hay fever collection if you want to compare your options.

Each pack contains 10 tablets, making it a practical choice for short-term relief during peak pollen season or for managing occasional allergic reactions. Clarityn is licensed in the UK and is available over the counter without a prescription for adults and children aged 2 years and over.

 

How Do Clarityn Allergy Tablets Work in the Body?

 

Loratadine belongs to a class of medicines called second-generation antihistamines. When your immune system encounters an allergen — pollen, pet hair, dust — it releases a chemical called histamine. Histamine then binds to H1 receptors throughout the body, triggering the familiar cascade of allergy symptoms. Here is how loratadine interrupts that process:

  • Loratadine selectively blocks peripheral H1 histamine receptors.
  • By occupying those receptors, it prevents histamine from binding and triggering symptoms.
  • Because it does not readily cross the blood-brain barrier, it causes significantly less sedation than older antihistamines such as chlorphenamine.
  • Effects typically begin within one to three hours of taking a tablet and last for up to 24 hours.

This once-daily action means you only need to remember one tablet per day, which makes it easier to stay consistent throughout allergy season.

 

Who Is Clarityn Allergy Suitable For?

 

Clarityn Allergy Tablets are suitable for a wide range of people dealing with allergic conditions. They are particularly useful if you need to stay alert at work, drive, or operate machinery — situations where older, sedating antihistamines could be dangerous. That said, a small number of people do experience mild drowsiness, so it is worth seeing how you respond before driving.

  • Adults and adolescents aged 12 and over: one 10mg tablet once daily.
  • Children aged 6 to 11 weighing more than 30kg: one 10mg tablet once daily.
  • People with seasonal allergic rhinitis (hay fever).
  • People with perennial (year-round) allergic rhinitis caused by dust mites or pet dander.
  • People with chronic idiopathic urticaria (hives) seeking symptom relief.

 

How Does Clarityn Compare to Other Antihistamine Tablets?

 

Feature Clarityn (Loratadine 10mg) Cetirizine 10mg
Sedation risk Very low Low (slightly higher than loratadine)
Dosing frequency Once daily Once daily
Suitable for children From age 2 (weight-based dosing) From age 6 (standard dosing)
Duration of action Up to 24 hours Up to 24 hours

 

How Should You Store Clarityn Allergy Tablets?

 

Store Clarityn Allergy Tablets below 25°C in a dry place, away from direct sunlight. 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 you are unsure whether your tablets are still suitable to use, ask your pharmacist — never take a medicine that looks or smells unusual.

If you experience eye-related allergy symptoms such as itching or watering alongside your other symptoms, it may be worth exploring our eye care collection for additional relief options.

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.

Clarityn Allergy 10 Tablets specifications
Treatment category Allergy & Hay Fever
Mechanism of action Selective peripheral H1 histamine receptor antagonist
Effective for Hay fever, allergic rhinitis, urticaria (hives)
Suitable for Adults and children aged 2 years and over
Active ingredient Loratadine 10mg
Pack size 10 tablets
Strength 10mg
UK classification P (Pharmacy medicine)
Drug class Second-generation antihistamine
Preparation Film-coated tablet
Route of administration Oral

Specifications of Clarityn Allergy 10 Tablets

 

What Is Clarityn Allergy and What Is It Used For?

 

Clarityn Allergy 10 Tablets contain loratadine 10mg, a non-drowsy antihistamine used to relieve the symptoms of allergic conditions. It is licensed in the UK for the treatment of seasonal and perennial allergic rhinitis — commonly known as hay fever — as well as chronic idiopathic urticaria (hives). Symptoms it can help with include sneezing, a runny or blocked nose, itchy and watery eyes, and itchy skin rashes. The NHS confirms that antihistamines like loratadine are a first-line treatment for hay fever and allergic reactions.

 

What Do You Need to Know Before Using Clarityn Allergy Tablets?

 

Before taking Clarityn, it is important to check whether it is appropriate for you. Do not take these tablets if any of the following apply:

  • You are allergic to loratadine or any other ingredient listed in the patient information leaflet.
  • You have severe liver impairment — your doctor may need to adjust the dosing interval.
  • You are pregnant or breastfeeding — always consult your GP or midwife before taking any medicine during pregnancy.
  • Your child is under 2 years of age.

The following medicines may interact with loratadine and could affect how it works or increase the risk of side effects:

  • Cimetidine (used for indigestion and stomach ulcers).
  • Ketoconazole (an antifungal medicine).
  • Erythromycin (an antibiotic).
  • Other antihistamines taken at the same time.

Always tell your pharmacist or doctor about all medicines you are currently taking, including herbal remedies and supplements.

 

How Should You Use Clarityn Allergy Tablets?

 

Always take Clarityn exactly as described in the patient information leaflet or as directed by your pharmacist. The tablet can be swallowed whole with a glass of water and can be taken with or without food.

  1. Check the expiry date on the pack before use.
  2. Take one tablet once daily — do not take more than one tablet in any 24-hour period.
  3. Swallow the tablet whole with water.
  4. Take at the same time each day to help you remember.
  5. If symptoms do not improve after a few days, speak to your pharmacist or GP.
Age Group Weight Dose Frequency
Adults & children aged 12+ Any 10mg (1 tablet) Once daily
Children aged 6–11 Over 30kg 10mg (1 tablet) Once daily
Children aged 2–5 or 6–11 under 30kg Under 30kg 5mg syrup formulation recommended Once daily

If you are looking for additional relief from cold and flu symptoms that can overlap with hay fever, our cold and flu collection may also be helpful.

 

What Are the Possible Side Effects of Clarityn Allergy Tablets?

 

Like all medicines, Clarityn can cause side effects, although not everyone gets them. Most side effects are mild and resolve on their own.

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

  • Headache
  • Dry mouth
  • Fatigue or tiredness
  • Drowsiness (less common than with older antihistamines)

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

  • Nausea or stomach upset
  • Nervousness or agitation
  • Fast or irregular heartbeat (palpitations)
  • Skin rash

Stop taking Clarityn and seek immediate medical attention if you develop signs of a serious allergic reaction, such as swelling of the face, lips, tongue, or throat, difficulty breathing, or a severe skin rash. This type of reaction is rare but requires urgent treatment.

 

How Should You Store Clarityn Allergy Tablets?

 

  • Store below 25°C in a dry place away from direct heat and sunlight.
  • Keep 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.

For those managing multiple allergy-related symptoms, it is worth knowing that our ear, nose and throat collection includes nasal sprays and other products that can complement antihistamine treatment.

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 Clarityn Allergy 10 Tablets online in the UK?

You can buy Clarityn Allergy 10 Tablets directly from Cured Pharmacy, a GPhC-registered UK online pharmacy. They are available without a prescription as an over-the-counter medicine. Simply add them to your basket and choose your preferred delivery option at checkout.

How do loratadine 10mg tablets work in the body?

Loratadine selectively blocks peripheral H1 histamine receptors, which prevents histamine from binding and triggering allergy symptoms such as sneezing, itching, and a runny nose. Because it does not readily cross the blood-brain barrier, it causes significantly less drowsiness than older antihistamines. Effects typically begin within one to three hours and last for up to 24 hours.

How do I take Clarityn Allergy Tablets step by step?

Take one 10mg tablet once daily, swallowed whole with a glass of water. You can take it with or without food, and it is easiest to take at the same time each day. Never take more than one tablet in any 24-hour period.

What is the best time of day to take Clarityn Allergy Tablets?

Clarityn can be taken at any time of day, morning or evening, with or without food. Many people prefer taking it in the morning so that it provides cover throughout the day during high-pollen periods. Consistency matters more than timing — try to take it at the same time each day.

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

The most common side effects include headache, dry mouth, and fatigue, which are usually mild and short-lived. Staying well hydrated can help with dry mouth, and most people find side effects settle after the first few days. If you experience a fast heartbeat, severe rash, or difficulty breathing, stop taking the tablets and seek medical advice immediately.

Who is eligible to take Clarityn Allergy 10 Tablets?

Clarityn is suitable for adults and children aged 2 years and over, though the 10mg tablet form is generally recommended for those aged 6 and over weighing more than 30kg. It is not suitable for people with a known allergy to loratadine or those with severe liver problems without medical supervision. Pregnant or breastfeeding women should consult their GP before use.

What happens if I miss a dose of Clarityn?

If you forget to take a tablet, take it as soon as you remember — unless it is nearly time for your next dose, in which case simply skip the missed one. Never take two tablets at the same time to compensate for a missed dose. Carry on with your usual schedule the following day.

Can I take Clarityn every day during hay fever season?

Yes, Clarityn can be taken daily throughout the hay fever season for continuous symptom relief. Many people use it on a regular basis from spring through to early autumn when pollen counts are highest. If you find you need it year-round, speak to your GP to rule out other underlying causes and explore longer-term management options.

How long can you take Clarityn Allergy Tablets for?

Clarityn can be used for short-term relief or on an ongoing basis for persistent allergic conditions. If you have been using it for several weeks without adequate symptom control, it is worth speaking to your GP or pharmacist about alternative or additional treatments. Long-term use is generally considered safe, but a healthcare professional should review your symptoms periodically.

What are the alternatives to Clarityn for hay fever?

Common alternatives include cetirizine 10mg and fexofenadine 120mg, both of which are second-generation antihistamines available over the counter in the UK. Nasal corticosteroid sprays such as beclometasone are also recommended for more persistent nasal symptoms. You can explore a wider range of options in our allergy and hay fever collection.

Is Clarityn safe to take with other medicines?

Clarityn can interact with certain medicines including cimetidine, ketoconazole, and erythromycin, which may increase loratadine levels in the blood. Always tell your pharmacist about all medicines, supplements, and herbal remedies you are taking before starting Clarityn. If you are unsure, your pharmacist can carry out a medicines review.

Does Clarityn cause drowsiness?

Clarityn is classified as a non-drowsy antihistamine because loratadine does not readily cross the blood-brain barrier. However, a small number of people do experience mild drowsiness, so it is advisable to see how you respond before driving or operating machinery. If drowsiness is a concern, speak to your pharmacist about your options.

Can children take Clarityn Allergy 10 Tablets?

Children aged 6 and over who weigh more than 30kg can take one 10mg Clarityn tablet once daily. For younger children aged 2 to 5, or children aged 6 to 11 who weigh 30kg or less, a 5mg syrup formulation is more appropriate. Always check with your pharmacist if you are unsure which formulation is right for your child.

What are the latest findings on loratadine for allergy treatment?

Loratadine remains one of the most widely recommended second-generation antihistamines in UK clinical guidelines, with a well-established safety and efficacy profile built over decades of use. Current NHS and NICE guidance continues to support its use as a first-line treatment for allergic rhinitis and urticaria. No significant new safety concerns have emerged in recent years that would change its recommended use.

Can I take Clarityn if I have other allergy symptoms like itchy eyes?

Yes, loratadine can help relieve itchy, watery eyes associated with hay fever and allergic reactions. For more targeted eye symptom relief, antihistamine eye drops may provide additional benefit alongside an oral tablet. Take a look at our eye care collection for suitable options to use alongside Clarityn.

How Should You Use Clarityn Allergy Tablets?

Clarityn Allergy Tablets are straightforward to use, but following the correct steps ensures you get the most from each dose. Always read the patient information leaflet supplied with your pack before starting treatment. If you have any questions, your pharmacist is the best person to ask.

Never crush or chew the tablet. If you have difficulty swallowing tablets, speak to your pharmacist about alternative formulations such as loratadine syrup.

What Is the Correct Dose of Clarityn Allergy Tablets?

The dose of Clarityn depends on age and, for younger children, body weight. Always follow the dosing guidance below and never exceed the stated dose. Taking more than the recommended amount will not improve your symptoms and may increase the risk of side effects.

When Is the Best Time to Use Clarityn Allergy Tablets?

Clarityn can be taken at any time of day — morning, afternoon, or evening — and food does not affect its absorption. Most people find that taking it first thing in the morning works well, as it provides cover throughout the day when pollen counts tend to be at their highest. If you find it causes any mild drowsiness, switching to an evening dose may suit you better.

During high-pollen days, taking your tablet before you head outdoors gives the medicine time to reach effective levels in your system before exposure begins.

How Long Can You Use Clarityn Allergy Tablets For?

Clarityn can be used for as long as your allergy symptoms persist. Many people take it daily throughout the hay fever season, which typically runs from late March to September in the UK. For year-round allergies caused by dust mites or pet dander, it can be used on an ongoing basis under pharmacist or GP guidance.

If your symptoms have not improved after a few weeks of regular use, or if they are getting worse, speak to your GP. They may recommend additional treatments such as a nasal corticosteroid spray or refer you for allergy testing.

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 Clarityn Allergy Tablets?

Most people tolerate Clarityn well, and serious side effects are uncommon. Because loratadine is a second-generation antihistamine, it is far less likely to cause drowsiness than older medicines like chlorphenamine. That said, some people do experience mild effects, particularly when they first start taking it.

  • Headache
  • Dry mouth
  • Fatigue or tiredness
  • Mild drowsiness

These effects are generally mild and tend to resolve on their own within a day or two. Drinking plenty of water throughout the day can help ease dry mouth.

What Are the Less Common Side Effects of Clarityn Allergy Tablets?

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

  • Nausea or stomach discomfort
  • Nervousness or restlessness
  • Palpitations (fast or irregular heartbeat)
  • Skin rash or itching
  • Dizziness
  • Blurred vision

Children may occasionally experience excitability or sleep disturbances. If this happens, speak to your pharmacist about whether an alternative formulation or medicine might be more suitable.

What Are the Serious Side Effects of Clarityn Allergy Tablets?

Serious side effects from loratadine are rare, but they do require prompt medical attention. Stop taking Clarityn immediately and call 999 or go to your nearest A&E if you experience any of the following signs of a severe allergic reaction (anaphylaxis):

  • Swelling of the face, lips, tongue, or throat
  • Difficulty breathing or swallowing
  • Sudden drop in blood pressure causing dizziness or collapse
  • Severe skin rash or hives spreading rapidly

Liver problems have been reported very rarely. Seek medical advice if you notice yellowing of the skin or eyes (jaundice), dark urine, or persistent abdominal pain.

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

For mild side effects such as headache or dry mouth, these usually settle without any action needed. If a side effect is troubling you or does not go away, contact your pharmacist — they can advise whether you should continue, reduce your dose, or switch to an alternative. You can also report side effects directly to the MHRA via the Yellow Card scheme at yellowcard.mhra.gov.uk.

Never stop taking a medicine abruptly without speaking to a healthcare professional if you have been advised to take it regularly for a medical condition.

Can Clarityn Allergy Tablets Interact With Other Medicines?

Loratadine can interact with certain medicines, which may increase the amount of loratadine in your bloodstream and raise the risk of side effects. Known interactions include cimetidine (used for indigestion), ketoconazole (an antifungal), and erythromycin (an antibiotic). Taking other antihistamines at the same time is not recommended. Always inform your pharmacist or GP of all medicines, supplements, and herbal products you are currently taking before starting Clarityn.

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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