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Clarityn Allergy Syrup Mixed Berry Flavoured Sugar Free - 60ml

Clarityn Allergy Syrup Mixed Berry Flavoured Sugar Free - 60ml

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  • ✔️ Relieves hay fever, sneezing, and itchy eyes in children
  • ✔️ Sugar-free and alcohol-free mixed berry oral syrup
  • ✔️ Non-drowsy loratadine formula suitable from age 2
  • ✔️ Once-daily dosing for all-day allergy symptom control
  • ✔️ Licensed for both allergic rhinitis and urticaria relief

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Is Clarityn Syrup the Right Loratadine Syrup for Children?

 

Allergy season can be genuinely miserable for children — itchy eyes, a runny nose, constant sneezing. If you're looking for a reliable, non-drowsy option, Clarityn Allergy Syrup Mixed Berry Flavoured Sugar Free 60ml is worth knowing about. It contains loratadine syrup for children at a concentration of 5mg per 5ml, making it easy to measure an accurate dose for younger patients. The mixed berry flavour makes it far more palatable than many medicines, and the sugar-free formula means you don't have to worry about unnecessary additives. You can browse the full range of allergy treatments at our allergy and hay fever collection.

Clarityn is a well-established brand in the UK, and this syrup formulation is specifically designed for children aged 2 years and over. It's available over the counter without a prescription, making it a convenient choice when symptoms flare up unexpectedly.

 

How Does Clarityn Allergy Syrup Work in the Body?

 

Loratadine belongs to a class of medicines called second-generation antihistamines. When your child encounters an allergen — pollen, pet hair, dust mites — their immune system releases a chemical called histamine. It's histamine that causes those familiar, uncomfortable symptoms. Loratadine works by selectively blocking H1 histamine receptors, preventing histamine from binding and triggering the allergic response.

  • Loratadine is absorbed through the gut after oral administration
  • It reaches peak plasma concentration within 1 to 1.5 hours
  • Symptom relief typically begins within 1 to 3 hours of dosing
  • Its effects last for approximately 24 hours, supporting once-daily dosing
  • Unlike first-generation antihistamines, it has minimal sedative effect at standard doses

 

Who Should Use Clarityn Allergy Syrup?

 

This syrup is suitable for children aged 2 years and over who are experiencing symptoms of allergic rhinitis (hay fever) or urticaria (hives). It's particularly useful for children who struggle to swallow tablets. Adults can also use it — those weighing over 30kg take a 10ml dose.

  • Children aged 2–12 years with hay fever or allergic rhinitis
  • Children experiencing urticaria (itchy skin rash caused by an allergic reaction)
  • Children who cannot swallow tablets or capsules
  • Patients who need a non-drowsy antihistamine for daytime use

It is not suitable for children under 2 years of age. Always check with your pharmacist if your child has kidney or liver problems before starting treatment.

 

How Does Clarityn Syrup Compare to Other Children's Antihistamines?

 

Feature Clarityn Allergy Syrup (Loratadine) Cetirizine Oral Solution
Active ingredient Loratadine 5mg/5ml Cetirizine 5mg/5ml
Drowsiness risk Non-drowsy (low risk) Low risk, slightly higher than loratadine
Minimum age 2 years 2 years
Sugar-free Yes Varies by brand
Dosing frequency Once daily Once daily

 

Is Clarityn Allergy Syrup Safe to Store at Home?

 

Yes — this product is straightforward to store. Keep it below 25°C, away from direct sunlight, and out of reach of children. Once opened, check the packaging for any in-use shelf life guidance. If you're managing multiple allergy products for your family, our baby and toddler collection includes a range of child-appropriate health products to keep things organised.

As with all antihistamines, do not use beyond the printed expiry date. If the syrup looks discoloured or has changed in consistency, do not use it and speak to your pharmacist.

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 Syrup Mixed Berry Flavoured Sugar Free 60ml specifications
Treatment category Allergy & Hay Fever
Mechanism of action Selective H1 histamine receptor antagonist
Effective for Allergic rhinitis, urticaria
Suitable for Children aged 2 years and over; adults
Active ingredient Loratadine 5mg/5ml
Pack size 60ml
Strength 5mg/5ml
UK classification P (Pharmacy medicine)
Drug class Second-generation antihistamine
Preparation Oral syrup
Route of administration Oral

Specifications of Clarityn Allergy Syrup Mixed Berry Flavoured Sugar Free 60ml

 

What Is Clarityn Allergy Syrup and What Is It Used For?

 

Clarityn Allergy Syrup Mixed Berry Flavoured Sugar Free 60ml is an oral antihistamine medicine containing loratadine 5mg per 5ml. It is used to relieve the symptoms of allergic conditions, including hay fever (seasonal allergic rhinitis) and urticaria (hives). Symptoms it can help with include sneezing, a runny or blocked nose, itchy and watery eyes, and itchy skin rashes. It is suitable for children aged 2 years and over, as well as adults. The once-daily dosing makes it practical for busy families managing allergy symptoms throughout the day.

 

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

 

Before giving this medicine to your child, read the following carefully. Some conditions and medicines may affect whether this product is appropriate.

Do not use Clarityn Allergy Syrup if:

  • Your child is under 2 years of age
  • Your child is allergic to loratadine or any other ingredient in the syrup
  • Your child has been told they have phenylketonuria (check the full ingredient list with your pharmacist)

Speak to your doctor or pharmacist before use if your child:

  • Has liver or kidney problems
  • Has epilepsy or a seizure disorder
  • Is taking any other medicines, including herbal remedies

Known drug interactions — use with caution alongside:

  • Ketoconazole (antifungal)
  • Erythromycin (antibiotic)
  • Cimetidine (used for indigestion)
  • Other antihistamines or sedating medicines

 

How Should You Use Clarityn Allergy Syrup Correctly?

 

Always use the measuring device provided with the pack to ensure an accurate dose. Do not use a household teaspoon, as this may result in an incorrect amount being given. The syrup should be taken orally, once daily.

  1. Shake the bottle gently before use if instructed on the label
  2. Use the measuring cup or oral syringe provided to measure the correct dose
  3. Give the syrup directly by mouth — it does not need to be diluted
  4. Administer at the same time each day to maintain consistent symptom control
  5. Replace the cap securely after use and store below 25°C
Age Group Weight Dose Frequency
Children 2–12 years 30kg or less 5ml (2.5mg loratadine) Once daily
Children 2–12 years Over 30kg 10ml (5mg loratadine) Once daily
Adults & children over 12 Any 10ml (5mg loratadine) Once daily

If you are also managing eye-related allergy symptoms alongside hay fever, you may find it helpful to explore our eye care collection for complementary products.

 

What Are the Possible Side Effects of Clarityn Allergy Syrup?

 

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

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

  • Headache
  • Nervousness or excitability (particularly in children)
  • Fatigue or tiredness

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

  • Drowsiness
  • Dry mouth
  • Nausea or stomach upset
  • Skin rash
  • Hair loss (very rare)

Stop using the medicine and seek immediate medical attention if your child develops signs of a serious allergic reaction, such as swelling of the face, lips, or throat, difficulty breathing, or a severe skin reaction. These reactions are rare but require urgent care.

 

How Should You Store Clarityn Allergy Syrup?

 

Correct storage helps maintain the medicine's effectiveness and safety throughout its shelf life.

  • Store below 25°C
  • Keep away from direct sunlight and heat sources
  • Do not refrigerate unless the label specifically instructs you to
  • Keep the bottle tightly closed when not in use
  • Store out of the sight and reach of children
  • Do not use after the expiry date printed on the label
  • Do not dispose of medicines via wastewater or household waste — return unused medicine to your pharmacist

If you're managing a range of allergy-related conditions in your household, our ear, nose and throat collection includes additional products that may help with nasal and sinus symptoms alongside 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 Syrup online in the UK?

You can buy Clarityn Allergy Syrup Mixed Berry Flavoured Sugar Free 60ml directly from Cured Pharmacy, a GPhC-registered online pharmacy. No prescription is needed as it is an over-the-counter medicine. Simply add it to your basket and select your preferred delivery option at checkout. You can also browse our full allergy and hay fever collection for related products.

How does loratadine syrup for children work in the body?

Loratadine is a second-generation antihistamine that works by selectively blocking H1 histamine receptors in the body. When your child is exposed to an allergen such as pollen or pet dander, the immune system releases histamine, which causes sneezing, itching, and a runny nose. By blocking these receptors, loratadine prevents histamine from triggering those symptoms. It begins to work within 1 to 3 hours and its effects last for around 24 hours.

What is the correct dose of Clarityn Syrup for my child?

The dose depends on your child's weight. Children aged 2 to 12 years who weigh 30kg or less should receive 5ml (containing 2.5mg of loratadine) once daily. Children over 30kg, teenagers, and adults should take 10ml (5mg) once daily. Always use the measuring device provided in the pack rather than a household spoon to ensure accuracy.

Is Clarityn Allergy Syrup suitable for children under 2 years old?

No — Clarityn Allergy Syrup is not recommended for children under 2 years of age. The safety and efficacy of loratadine in this age group has not been established. If your child is under 2 and experiencing allergy symptoms, speak to your GP or pharmacist before using any antihistamine product.

Does Clarityn Syrup cause drowsiness in children?

Clarityn contains loratadine, which is classified as a non-drowsy antihistamine at standard doses. Unlike older first-generation antihistamines such as chlorphenamine, it has a much lower risk of causing sedation. However, a small number of children may still experience mild drowsiness, so it is worth monitoring your child when they first start taking it.

Is Clarityn Allergy Syrup sugar-free?

Yes, Clarityn Allergy Syrup Mixed Berry Flavoured is sugar-free and alcohol-free, making it a suitable choice for children who need to limit their sugar intake or whose parents prefer to avoid sugar in medicines. It is sweetened with alternative sweeteners to maintain the pleasant mixed berry flavour without added sugar.

How long can my child take Clarityn Syrup for?

Clarityn Syrup can be used for the duration of allergen exposure, such as throughout hay fever season. If symptoms persist for more than 10 days without improvement, you should consult a GP. For longer-term or year-round allergy management, speak to a healthcare professional to review whether continued use is appropriate for your child.

What should I do if my child misses a dose of Clarityn Syrup?

If you miss a dose, give it as soon as you remember — unless it is nearly time for the next dose. In that case, skip the missed dose and continue with the regular schedule. Never give a double dose to make up for a missed one, as this increases the risk of side effects without providing additional benefit.

What are the side effects of Clarityn Allergy Syrup?

Common side effects include headache, nervousness, and fatigue. Less commonly, children may experience drowsiness, dry mouth, or mild stomach upset. Serious allergic reactions are rare but can include facial swelling, difficulty breathing, or a severe skin rash — if any of these occur, stop the medicine and seek urgent medical attention immediately.

Can Clarityn Syrup be taken alongside other medicines?

Some medicines can interact with loratadine, including ketoconazole (an antifungal), erythromycin (an antibiotic), and cimetidine (used for indigestion). These interactions may increase loratadine levels in the blood. Always tell your pharmacist or GP about all medicines your child is taking, including herbal remedies and supplements, before starting Clarityn Syrup.

What are the alternatives to Clarityn Syrup for children's allergies?

Common alternatives include cetirizine oral solution and, for older children, fexofenadine. Chlorphenamine syrup is also available but is a first-generation antihistamine and more likely to cause drowsiness. The choice between them often depends on your child's age, weight, and how they respond to treatment — your pharmacist can help you decide. You can also explore our allergy and hay fever collection for a broader range of options.

Can adults use Clarityn Allergy Syrup?

Yes, adults can use Clarityn Allergy Syrup. The adult dose is 10ml (5mg loratadine) once daily. However, most adults find tablets or capsules more convenient. The syrup formulation is particularly useful for those who have difficulty swallowing solid dosage forms.

What is the best time of day to give Clarityn Syrup to my child?

Clarityn Syrup can be given at any time of day, with or without food. Giving it at the same time each day helps maintain consistent levels of the medicine in the body and makes it easier to remember. Many parents find that giving it in the morning works well, particularly during hay fever season when pollen counts tend to be higher later in the day.

Does Clarityn Syrup help with skin allergies as well as hay fever?

Yes — as well as hay fever (allergic rhinitis), Clarityn Syrup is licensed for the treatment of urticaria, which is an itchy skin rash caused by an allergic reaction. It can help relieve the itching and redness associated with hives. If your child's skin symptoms are persistent or severe, it is worth speaking to a GP to rule out other underlying causes.

What are the latest findings on loratadine use in children?

Loratadine has been used in paediatric allergy management for several decades and remains one of the most widely recommended non-drowsy antihistamines for children in UK clinical guidelines. Current NHS guidance supports its use in children aged 2 and over for allergic rhinitis and urticaria. No significant new safety concerns have emerged in recent years, and it continues to be considered a well-tolerated first-line option for childhood allergies.

How Should You Use Clarityn Allergy Syrup?

Clarityn Allergy Syrup should be taken orally, using the measuring device provided in the pack. Never estimate the dose using a household teaspoon, as this can lead to under- or over-dosing. The syrup can be taken with or without food and does not need to be diluted before use.

Follow these steps each time you give the syrup:

What Is the Correct Dose of Clarityn Allergy Syrup?

The dose is determined by your child's weight, not just their age. Always follow the dosing table below and do not exceed the recommended amount. If you are unsure which dose applies to your child, ask your pharmacist before administering.

When Is the Best Time to Use Clarityn Allergy Syrup?

Clarityn Syrup can be taken at any time of day, with or without food. Many parents find it easiest to give the dose in the morning, particularly during hay fever season, as pollen counts tend to rise throughout the day. Taking it at the same time each day helps maintain consistent symptom control and makes it easier to remember.

If your child's symptoms are worse at night — for example, due to dust mite allergy — an evening dose may be more appropriate. Speak to your pharmacist if you are unsure about the best timing for your child's specific allergy triggers.

How Long Can You Use Clarityn Allergy Syrup For?

Clarityn Syrup can be used for as long as your child is exposed to the allergen causing their symptoms — for example, throughout the hay fever season. If symptoms do not improve after 10 days of use, or if they worsen at any point, stop using the medicine and consult a GP.

For children with year-round allergies, such as those triggered by dust mites or pet dander, longer-term use may be considered under the guidance of a healthcare professional. 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 Syrup?

Most children tolerate Clarityn Allergy Syrup well, and side effects are generally mild. The most frequently reported ones include:

  • Headache
  • Nervousness or excitability
  • Fatigue or feeling unusually tired

These effects are usually short-lived and tend to resolve without any specific treatment. If your child's headache is persistent or severe, speak to your pharmacist for advice.

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

Less commonly, some children may experience the following side effects. These affect fewer than 1 in 100 people but are worth being aware of:

  • Mild drowsiness
  • Dry mouth
  • Nausea or stomach discomfort
  • Skin rash
  • Increased appetite
  • Difficulty sleeping (insomnia)

Although loratadine is considered a non-drowsy antihistamine, a small number of children may still feel slightly sleepy, particularly when first starting treatment. Monitor your child when they begin taking the syrup.

What Are the Serious Side Effects of Clarityn Allergy Syrup?

Serious side effects are rare but require immediate medical attention. Stop giving the medicine and seek urgent help if your child develops any of the following:

  • Swelling of the face, lips, tongue, or throat (angioedema)
  • Difficulty breathing or swallowing
  • Severe skin reaction, including blistering or widespread rash
  • Rapid or irregular heartbeat (palpitations)
  • Seizures

These reactions may indicate a serious allergic response to the medicine itself. Call 999 or go to your nearest A&E department immediately if any of these occur.

What Should You Do If Your Child Experiences Side Effects?

For mild side effects such as headache or fatigue, you may not need to stop the medicine — simply monitor your child and ensure they are well hydrated. If side effects are troublesome or do not resolve within a few days, speak to your pharmacist or GP. They may suggest an alternative antihistamine that suits your child better.

You can also report suspected side effects directly to the MHRA via the Yellow Card scheme at yellowcard.mhra.gov.uk. This helps improve medicine safety monitoring across the UK.

Can Clarityn Allergy Syrup Interact With Other Medicines?

Yes — certain medicines can interact with loratadine and increase the amount of it in the bloodstream, which may raise the risk of side effects. Known interactions include ketoconazole (an antifungal medicine), erythromycin (an antibiotic), and cimetidine (used for indigestion and heartburn). Always inform your pharmacist or GP of all medicines your child is currently taking, including over-the-counter products and herbal supplements, before starting Clarityn Syrup.

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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