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Clarityn Allergy Relief 10mg

Clarityn Allergy Relief 10mg

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  • ✔️ Relieves hay fever sneezing, itching, and runny nose
  • ✔️ Non-drowsy formula — safe to drive and work
  • ✔️ Starts working within 1 to 3 hours of taking
  • ✔️ Once-daily 10mg dose lasts a full 24 hours
  • ✔️ Suitable for adults and children aged 6 and over

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What Are Clarityn Allergy Relief Loratadine 10mg Tablets?

 

If sneezing fits, a constantly runny nose, or itchy, watering eyes are making your day miserable, you are not alone. Hay fever affects around 1 in 5 people in the UK at some point in their lives, according to the NHS. Loratadine 10mg tablets — sold under the well-known brand name Clarityn — offer a once-daily, non-drowsy option for managing these symptoms without leaving you feeling foggy or tired. Each tablet contains 10mg of loratadine as the active ingredient, and the product is available over the counter without a prescription. You can browse the full range of treatments in our allergy and hay fever collection if you want to compare your options.

Clarityn Allergy Relief 10mg is licensed in the UK for the relief of symptoms associated with allergic rhinitis (hay fever) and chronic idiopathic urticaria (hives). It is suitable for adults and children aged 6 and over, making it a practical choice for households dealing with seasonal allergies.

 

How Does Clarityn Allergy Relief 10mg Work?

 

Loratadine belongs to a class of medicines called second-generation antihistamines. When your immune system encounters an allergen — pollen, pet dander, dust mites — 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.
  • Because it crosses the blood-brain barrier poorly, it causes significantly less sedation than older antihistamines like chlorphenamine.
  • It begins to work within 1 to 3 hours of taking a dose.
  • A single 10mg dose provides symptom relief for up to 24 hours.

The result? Sneezing, itching, nasal congestion, and watery eyes are all reduced — without the drowsiness that can interfere with driving, work, or concentration.

 

Who Should Use Clarityn Allergy Relief 10mg?

 

Clarityn 10mg tablets are designed for people who need reliable, daily allergy relief. They are particularly well suited to those who cannot afford to feel drowsy during the day — whether that is at work, behind the wheel, or looking after children. The NHS recommends antihistamines as a first-line treatment for hay fever symptoms.

  • Adults aged 18 and over with hay fever or allergic rhinitis
  • Children aged 6 to 17 years (under medical supervision where appropriate)
  • People with allergic skin reactions such as hives (urticaria)
  • Those who have found older, sedating antihistamines too tiring to use regularly

It is not suitable for children under 6 years old in tablet form — a loratadine syrup formulation is available for younger children. Always check with your pharmacist if you are unsure which formulation is right for your child.

 

How Does Clarityn Compare to Other Antihistamine Tablets?

 

Feature Clarityn (Loratadine 10mg) Zirtek (Cetirizine 10mg)
Active ingredient Loratadine Cetirizine
Dosing frequency Once daily Once daily
Sedation risk Very low Low (slightly higher than loratadine)
Suitable age (tablets) 6 years and over 6 years and over

 

How Should You Store Clarityn Allergy Relief 10mg?

 

Store Clarityn tablets below 25°C in a dry place, away from direct sunlight. Keep the pack out of reach and sight of children at all times. Do not use the tablets after the expiry date printed on the packaging — if in doubt, return unused medicines to your local pharmacy for safe disposal.

If you suffer from allergy-related eye symptoms such as itching or redness, you might also find it helpful to explore our eye care collection for additional relief options alongside your antihistamine tablet.

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 Relief 10mg specifications
Treatment category Allergy & Hay Fever
Active ingredient Loratadine 10mg
Mechanism of action Selective peripheral H1 histamine receptor antagonist
Effective for Allergic rhinitis (hay fever), chronic idiopathic urticaria (hives)
Suitable for Adults and children aged 6 years and over
Strengths 10mg
Pack sizes 7 tablets, 30 tablets
UK classification General Sale List (GSL)
Drug class Second-generation antihistamine
Preparation Film-coated tablet
Route of administration Oral

Specifications of Clarityn Allergy Relief 10mg

 

What Is Clarityn Allergy Relief 10mg and What Is It Used For?

 

Clarityn Allergy Relief 10mg is an over-the-counter antihistamine tablet containing loratadine as its active ingredient. It is used to relieve the symptoms of allergic rhinitis — commonly known as hay fever — including sneezing, a runny or blocked nose, itchy eyes, and skin reactions. It is also licensed for the treatment of chronic idiopathic urticaria, a condition that causes persistent itchy hives on the skin. The NHS lists antihistamines as one of the main treatments for hay fever, and loratadine is one of the most widely recommended options due to its non-sedating profile.

 

What Do You Need to Know Before Using Clarityn Allergy Relief 10mg?

 

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

  • You are allergic to loratadine or any other ingredient in the tablet
  • You have severe liver impairment (hepatic failure)
  • Your child is under 6 years old (use the syrup formulation instead)
  • You are pregnant or breastfeeding — seek advice from your doctor or pharmacist first, as loratadine passes into breast milk

The following medicines may interact with loratadine and increase the amount in your bloodstream. Tell your pharmacist if you are taking:

  • Ketoconazole (an antifungal medicine)
  • Erythromycin (an antibiotic)
  • Cimetidine (used for indigestion and stomach ulcers)
  • Any other antihistamines or sedating medicines

Alcohol may increase the risk of drowsiness even with a non-sedating antihistamine. It is advisable to limit alcohol intake while taking Clarityn.

 

How Should You Take Clarityn Allergy Relief 10mg?

 

Always take Clarityn exactly as described in this leaflet or as directed by your pharmacist. Do not exceed the stated dose.

  1. Remove one tablet from the blister pack.
  2. Swallow the tablet whole with a glass of water.
  3. You can take it with or without food — it makes no difference to how well it works.
  4. Take one tablet once daily, at roughly the same time each day.
  5. Do not take more than one tablet in 24 hours.
Indication Age Group Dose Frequency
Hay fever / allergic rhinitis Adults & children 6+ 10mg (1 tablet) Once daily
Urticaria (hives) Adults & children 6+ 10mg (1 tablet) Once daily
Children aged 2–5 years Children 2–5 Syrup formulation only As directed by pharmacist
Renal or hepatic impairment Adults 10mg every other day Alternate days — seek medical advice

 

What Are the Possible Side Effects of Clarityn Allergy Relief 10mg?

 

Like all medicines, Clarityn can cause side effects, although not everyone gets them. Most people tolerate loratadine very well. If you experience any side effects that concern you, speak to your pharmacist or GP.

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

  • Headache
  • Dry mouth
  • Fatigue or tiredness
  • Nervousness (particularly in children)

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

  • Nausea or stomach upset
  • Skin rash
  • Hair loss (alopecia) — very rare
  • Palpitations
  • Allergic reactions including swelling of the face, lips, or throat — stop use immediately and seek emergency help if this occurs

If you notice any symptoms of a serious allergic reaction (anaphylaxis), call 999 immediately. This is rare but requires urgent medical attention. You can also find additional support products for allergy-related skin reactions in our skin care collection.

 

How Should You Store Clarityn Allergy Relief 10mg?

 

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

If you are managing multiple allergy symptoms — including nasal congestion or ear discomfort — it may be worth exploring our ear, nose and throat collection for complementary treatments.

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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 Clarityn Allergy Relief 10mg online in the UK?

You can buy Clarityn Allergy Relief 10mg directly from Cured Pharmacy, a GPhC-registered UK online pharmacy, without needing a prescription. It is classified as a General Sale List (GSL) medicine, meaning it is available over the counter. Browse our full allergy and hay fever collection for the complete range of antihistamine options available.

How does Clarityn Allergy Relief 10mg work in the body?

Clarityn contains loratadine, which works by selectively blocking H1 histamine receptors in the body. When you are exposed to an allergen such as pollen or pet dander, your immune system releases histamine — loratadine prevents histamine from binding to these receptors and triggering allergy symptoms. Because loratadine crosses the blood-brain barrier poorly, it causes far less sedation than older antihistamines like chlorphenamine.

How do I take Clarityn Allergy Relief 10mg step by step?

Taking Clarityn is straightforward. Follow these steps:

  1. Take one 10mg tablet once daily.
  2. Swallow it whole with a glass of water.
  3. It can be taken with or without food.
  4. Try to take it at the same time each day for consistent relief.

Do not take more than one tablet in any 24-hour period.

What is the best time of day to take Clarityn Allergy Relief 10mg?

Clarityn can be taken at any time of day because it is non-drowsy, so it will not interfere with your daily activities or sleep. Many people prefer to take it in the morning so that symptom relief is active throughout the day when pollen counts tend to be highest. Consistency matters more than timing — taking it at the same time each day helps maintain steady levels in your system.

How quickly does Clarityn Allergy Relief 10mg start working?

Loratadine typically begins to work within 1 to 3 hours of taking a dose. Full symptom relief may take a little longer, particularly if your allergy symptoms are already well established. A single 10mg dose provides relief for up to 24 hours, which is why once-daily dosing is sufficient for most people.

What are the side effects of Clarityn Allergy Relief 10mg and how do I manage them?

Most people tolerate Clarityn well. The most commonly reported side effects include:

  • Headache
  • Dry mouth
  • Fatigue

Staying well hydrated can help with dry mouth and headache. If side effects persist or you experience anything more serious such as a skin rash or palpitations, stop taking the tablets and speak to your pharmacist or GP promptly.

Who is eligible to take Clarityn Allergy Relief 10mg?

Clarityn 10mg tablets are suitable for adults and children aged 6 years and over. Children aged 2 to 5 should use a loratadine syrup formulation rather than tablets, as the dose needs to be adjusted for body weight. People with severe liver impairment should not take Clarityn without medical advice, and those with kidney problems may need to take it on alternate days — always check with your pharmacist first.

Can I take Clarityn Allergy Relief 10mg if I am pregnant or breastfeeding?

If you are pregnant or breastfeeding, you should speak to your doctor or pharmacist before taking Clarityn. Loratadine does pass into breast milk in small amounts, and while it is not known to be harmful, medical guidance should be sought before use during pregnancy or lactation. Your healthcare professional can help you weigh up the benefits and any potential risks for your individual situation.

What happens if I miss a dose of Clarityn Allergy Relief 10mg?

If you forget to take a dose, take it as soon as you remember — provided it is not nearly time for your next scheduled dose. If it is close to the time of your next dose, simply skip the missed one and carry on as normal. Never take two tablets at once to compensate for a missed dose, as this could increase the risk of side effects.

Can I take Clarityn Allergy Relief 10mg with other medicines?

Some medicines can interact with loratadine and raise its levels in the blood, including ketoconazole (antifungal), erythromycin (antibiotic), and cimetidine (used for indigestion). Always tell your pharmacist about any other medicines, supplements, or herbal remedies you are taking before starting Clarityn. Combining it with other antihistamines or sedating medicines is not recommended.

Is Clarityn Allergy Relief 10mg non-drowsy?

Yes — loratadine is classified as a second-generation, non-sedating antihistamine. Unlike older antihistamines such as chlorphenamine, it is much less likely to cause drowsiness because it does not readily cross the blood-brain barrier. However, a small number of people may still experience mild fatigue, so it is worth seeing how you respond before driving or operating machinery for the first time.

What are the alternatives to Clarityn Allergy Relief 10mg?

There are several other non-drowsy antihistamines available over the counter in the UK, including:

  • Cetirizine 10mg (e.g. Zirtek, Piriteze)
  • Fexofenadine 120mg (e.g. Telfast, Allevia)
  • Acrivastine 8mg (e.g. Benadryl Allergy Relief)

Each works slightly differently and individual responses vary, so if one does not suit you, another may work better. Speak to your pharmacist for personalised advice.

How long can I take Clarityn Allergy Relief 10mg for?

For seasonal hay fever, Clarityn is typically taken throughout the allergy season — which in the UK can run from late March to September depending on which pollens trigger your symptoms. For chronic urticaria, longer-term use may be appropriate under the guidance of a doctor. If you have been taking it for more than a few weeks without improvement, it is worth speaking to your GP to review your treatment plan.

Can Clarityn Allergy Relief 10mg help with pet allergies?

Yes — loratadine is effective for allergic rhinitis triggered by pet dander (skin flakes from animals), not just pollen. If you experience sneezing, itching, or a runny nose around cats, dogs, or other animals, Clarityn can help reduce these symptoms. For allergy-related eye symptoms caused by pet dander, you might also consider products from our eye care collection alongside your antihistamine.

What are the latest findings on loratadine for hay fever treatment?

Loratadine has been extensively studied since its introduction and remains one of the most widely recommended non-sedating antihistamines in UK clinical guidelines. The NHS and NICE continue to support its use as a first-line treatment for allergic rhinitis. Research consistently confirms its favourable safety profile and efficacy, with no significant new safety concerns identified in recent years for standard OTC use in adults and children aged 6 and over.

How Should You Use Clarityn Allergy Relief 10mg?

Clarityn Allergy Relief 10mg is simple to use and fits easily into a daily routine. Always read the patient information leaflet supplied with your pack before starting treatment, and follow the steps below for correct use.

If you are giving Clarityn to a child aged 6 to 11 years, ensure they swallow the tablet whole and supervise them throughout. Children under 6 years old should not use the tablet formulation.

What Is the Correct Dose of Clarityn Allergy Relief 10mg?

The recommended dose varies slightly depending on age and any underlying health conditions. Never exceed the dose shown in the table below. If you have kidney or liver problems, speak to your pharmacist before starting treatment as your dose schedule may need to be adjusted.

When Is the Best Time to Use Clarityn Allergy Relief 10mg?

Because loratadine is non-drowsy, you can take it at any time of day without worrying about it affecting your alertness or ability to drive. Many people find that taking it first thing in the morning works well, as pollen counts tend to rise during the morning hours and peak in the early afternoon. Taking it consistently at the same time each day — whether morning or evening — helps maintain a steady level of the medicine in your system, which is what delivers reliable, all-day symptom control.

How Long Can You Use Clarityn Allergy Relief 10mg For?

For seasonal hay fever, you can take Clarityn throughout the relevant pollen season, which in the UK typically runs from late March through to September. For chronic urticaria or year-round allergic rhinitis, longer-term use may be appropriate, but it is advisable to review your treatment with a GP if you have been taking it continuously for more than a few months. If your symptoms do not improve after a few days of treatment, or if they worsen, seek advice from your pharmacist or doctor.

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 Relief 10mg?

Most people who take Clarityn Allergy Relief 10mg experience no side effects at all, or only very mild ones. Because loratadine is a second-generation antihistamine, it is far less likely to cause drowsiness than older medicines in this class. That said, it is still worth knowing what to look out for.

  • Headache
  • Dry mouth
  • Fatigue or tiredness
  • Nervousness (more commonly reported in children)
  • Increased appetite

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

What Are the Less Common Side Effects of Clarityn Allergy Relief 10mg?

Less commonly, some people may notice the following side effects. These affect fewer than 1 in 100 people but are worth being aware of, particularly if you are taking Clarityn for the first time.

  • Nausea or stomach discomfort
  • Skin rash or itching
  • Palpitations (awareness of your heartbeat)
  • Dizziness
  • Hair loss (alopecia) — very rare
  • Liver function abnormalities — very rare, reported in post-marketing surveillance

If you notice a skin rash or palpitations, stop taking the tablets and speak to your pharmacist or GP as soon as possible.

What Are the Serious Side Effects of Clarityn Allergy Relief 10mg?

Serious side effects from loratadine are rare, but they can occur. A severe allergic reaction (anaphylaxis) is a medical emergency. Symptoms include sudden swelling of the face, lips, tongue, or throat, difficulty breathing, a rapid heartbeat, or a sudden drop in blood pressure. If you or someone else experiences these symptoms after taking Clarityn, call 999 immediately and do not take any further doses.

Seizures have been reported very rarely in association with loratadine use. If you experience a seizure, seek emergency medical attention straight away.

What Should You Do If You Experience Side Effects of Clarityn Allergy Relief 10mg?

For mild side effects such as headache or dry mouth, these often settle within a day or two as your body adjusts. If they persist or become bothersome, speak to your pharmacist — they may be able to suggest ways to manage them or recommend an alternative antihistamine that suits you better. You can also report side effects directly to the MHRA via the Yellow Card scheme at yellowcard.mhra.gov.uk.

Can Clarityn Allergy Relief 10mg Interact With Other Medicines?

Yes — certain medicines can increase the level of loratadine in your blood, which may raise the risk of side effects. Always tell your pharmacist if you are taking any of the following:

  • Ketoconazole (antifungal)
  • Erythromycin (antibiotic)
  • Cimetidine (for indigestion or stomach ulcers)
  • Other antihistamines or sedating medicines
  • Alcohol — may increase the risk of drowsiness even with a non-sedating antihistamine

Always check with your pharmacist before combining Clarityn with any other medicines, including herbal remedies and supplements.

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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