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Fusion Allergy Eye Spray

Fusion Allergy Eye Spray

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  • ✔️ Relieves itchy, red, and watery eyes caused by allergies
  • ✔️ Targets allergic conjunctivitis with mast cell stabilising action
  • ✔️ Spray format — no need to open your eye to apply
  • ✔️ Suitable for hay fever and year-round allergy sufferers
  • ✔️ Discard-after-28-days design ensures hygienic, fresh application

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What Is Fusion Allergy Eye Spray and How Does It Help Itchy Eyes?

 

If your eyes are constantly itching, watering, or turning red every time pollen season hits, you are far from alone. Allergic conjunctivitis — the clinical term for eye inflammation triggered by allergens — affects millions of people across the UK each year. The allergy eye spray format from Fusion offers a practical, drop-free alternative to traditional eye drops, making it easier to apply without the fuss of tilting your head back and aiming precisely. At just £9.70, it sits comfortably within our wider range of eye care products at Cured Pharmacy.

Allergic eye symptoms are typically driven by the immune system's response to harmless substances like pollen, dust mites, or pet dander. When these allergens land on the surface of the eye, mast cells release histamine, causing that familiar itch, redness, and watering. Fusion Allergy Eye Spray is designed to address this reaction directly at the ocular surface, providing targeted relief where you need it most.

 

How Does Fusion Allergy Eye Spray Work to Relieve Symptoms?

 

The mechanism behind this spray centres on mast cell stabilisation. Here is how it works step by step:

  • Allergens such as pollen or dust contact the conjunctival surface of the eye.
  • Mast cells in the conjunctiva would normally degranulate, releasing histamine and other pro-inflammatory mediators.
  • The active ingredient in the spray stabilises these mast cells, preventing degranulation from occurring.
  • Without histamine release, the cascade of itching, redness, and watering is significantly reduced.
  • The spray also forms a fine film over the ocular surface, helping to physically shield the eye from further allergen contact.

This dual action — pharmacological mast cell stabilisation combined with a physical barrier effect — means the spray can both treat existing symptoms and help prevent them from worsening when used regularly throughout the allergy season.

 

Who Should Use Fusion Allergy Eye Spray?

 

This product is particularly well suited to people who struggle with seasonal or perennial allergic conjunctivitis. It is a good option if you find traditional eye drops awkward to instil, or if you are looking for a preservative-free or low-irritant format. Many people who manage hay fever and related symptoms also find it helpful alongside other allergy treatments available in our allergy and hay fever collection.

  • Adults and adolescents experiencing seasonal hay fever eye symptoms
  • People with perennial allergic conjunctivitis triggered by dust mites or pet dander
  • Those who find conventional eye drops difficult to use accurately
  • Individuals seeking a convenient, on-the-go eye allergy solution

 

How Does Fusion Allergy Eye Spray Compare to Standard Eye Drops?

 

Feature Fusion Allergy Eye Spray Standard Allergy Eye Drops
Application method Spray onto closed eyelid Drop instilled into open eye
Ease of use Easier — no need to open eye Can be tricky, especially for children
Contact lens compatibility Remove lenses before use Remove lenses before use
Preservative content Typically preservative-free formulation May contain preservatives depending on brand

 

Is Fusion Allergy Eye Spray Suitable for Everyday Use and How Should It Be Stored?

 

Using an allergy eye spray consistently throughout the allergy season tends to give better results than using it only when symptoms flare. Regular use helps maintain mast cell stabilisation, reducing the overall inflammatory burden on the eye. Store the product below 25°C, away from direct sunlight, and keep it out of reach of children. Once opened, discard after 28 days — even if product remains — to reduce the risk of contamination.

Do not use this spray if you have a known hypersensitivity to any of its ingredients. If you wear contact lenses, always remove them before application and wait at least 15 minutes before reinserting. If you experience persistent or worsening eye symptoms, seek advice from your GP or optometrist rather than continuing self-treatment.

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.

Fusion Allergy Eye Spray specifications
Treatment category Allergic conjunctivitis / Eye allergy relief
Mechanism of action Mast cell stabilisation; physical allergen barrier
Effective for Itchy, red, and watery eyes caused by allergies
Suitable for Adults and adolescents with allergic conjunctivitis
Active ingredient Sodium cromoglicate
UK classification General Sale / Pharmacy (P) — OTC
Preparation Ocular spray solution
Route of administration Ocular (applied to closed eyelid)

Specifications of Fusion Allergy Eye Spray

 

What Is Fusion Allergy Eye Spray and What Is It Used For?

 

Fusion Allergy Eye Spray is an over-the-counter ocular spray formulated to relieve the symptoms of allergic conjunctivitis. These symptoms — itching, redness, watering, and a gritty sensation — are commonly triggered by seasonal allergens such as grass pollen, tree pollen, and mould spores, as well as year-round triggers like house dust mites and pet dander. The NHS recognises allergic conjunctivitis as one of the most common eye conditions in the UK, frequently occurring alongside hay fever.

The spray is applied to the closed eyelid rather than directly into the open eye, making it a more accessible option for people who find conventional eye drops difficult to use. It is intended for symptomatic relief during periods of allergen exposure and can be used as part of a broader allergy management plan.

 

What Do You Need to Know Before Using Fusion Allergy Eye Spray?

 

Before using this product, read the following contraindications and warnings carefully:

  • Do not use if you are allergic to sodium cromoglicate or any other ingredient in the formulation.
  • Remove contact lenses before application; wait at least 15 minutes before reinserting.
  • Do not use in children under the age specified on the packaging without first consulting a pharmacist or GP.
  • If you have an eye infection, do not use this spray until the infection has been treated and resolved.
  • Avoid touching the nozzle tip to any surface, including your eye or skin, to prevent contamination.
  • Discard 28 days after first opening, regardless of remaining product.
  • Seek medical advice before use if you are pregnant or breastfeeding.

Regarding drug interactions, no significant interactions with other medicines have been identified for topically applied sodium cromoglicate. However, if you are using other eye preparations, allow at least five minutes between applications.

  • No clinically significant systemic drug interactions are currently documented for this topical product.
  • If using multiple eye preparations simultaneously, space applications by at least five minutes.

 

How Should You Use Fusion Allergy Eye Spray?

 

Using the spray correctly ensures you get the most from each application. Follow these steps each time:

  1. Wash your hands thoroughly with soap and water before handling the spray.
  2. If wearing contact lenses, remove them before proceeding.
  3. Close your eye gently.
  4. Hold the spray nozzle approximately one centimetre from the inner corner of your closed eyelid.
  5. Press the pump once or twice as directed on the packaging.
  6. Blink several times to help distribute the solution evenly across the eye surface.
  7. Repeat for the other eye if required.
  8. Replace the cap securely after use.
Indication Age Group Dose Frequency
Allergic conjunctivitis Adults & adolescents 1–2 sprays per eye 2–4 times daily
Allergic conjunctivitis Children (as directed) As per PIL / pharmacist advice As directed

If you are also managing broader allergy symptoms such as a runny nose or sneezing, you may find it helpful to explore our allergy and hay fever range for complementary treatments.

 

What Are the Possible Side Effects of Fusion Allergy Eye Spray?

 

Like all medicines, Fusion Allergy Eye Spray can cause side effects, although not everyone experiences them. Most side effects are mild and resolve quickly after application.

Common side effects:

  • Mild, transient stinging or burning sensation immediately after spraying
  • Temporary blurred vision lasting a few seconds to a minute
  • Slight watering of the eye immediately after application

Less common side effects:

  • Localised irritation or a feeling of grittiness
  • Redness of the conjunctiva (usually short-lived)
  • Hypersensitivity reactions — stop use immediately and seek medical advice if this occurs

If you experience severe eye pain, sudden changes in vision, or signs of an allergic reaction such as swelling of the face or difficulty breathing, stop using the product immediately and seek urgent medical attention.

 

How Should You Store Fusion Allergy Eye Spray?

 

Correct storage helps maintain the product's integrity and safety. Follow these guidelines:

  • Store below 25°C in a cool, dry place away from direct sunlight.
  • Do not freeze the product.
  • Keep the cap on when not in use to prevent contamination.
  • Keep out of the reach and sight of children.
  • Discard 28 days after first opening — write the opening date on the bottle if helpful.
  • Do not use after the expiry date printed on the packaging.
  • Do not dispose of medicines via wastewater or household waste — return unused product to your pharmacy.

For a broader range of products to support your eye health, visit our dedicated eye care collection at Cured Pharmacy.

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 Fusion Allergy Eye Spray online in the UK?

You can buy Fusion Allergy Eye Spray directly from Cured Pharmacy, a GPhC-registered UK online pharmacy, for just £9.70. It is available without a prescription as an over-the-counter product. Simply add it to your basket and choose your preferred delivery option at checkout.

How does Fusion Allergy Eye Spray work in the body?

Fusion Allergy Eye Spray works by stabilising mast cells on the conjunctival surface of the eye, preventing them from releasing histamine and other inflammatory chemicals when exposed to allergens. This reduces the itching, redness, and watering associated with allergic conjunctivitis. It also forms a fine film over the eye surface, providing a physical barrier against further allergen contact.

How do I use Fusion Allergy Eye Spray step by step?

Wash your hands first, then close your eye and hold the nozzle approximately one centimetre from the inner corner of your closed eyelid. Press the pump once or twice as directed, then blink gently to spread the solution across the eye surface. Repeat for the other eye if needed, and always replace the cap after use.

How often should I use Fusion Allergy Eye Spray each day?

The typical recommended frequency is two to four times daily, depending on the severity of your symptoms and the guidance on the product packaging. Try to space applications evenly throughout the day for consistent symptom control. Do not exceed the stated dose without speaking to a pharmacist or GP.

What are the side effects of Fusion Allergy Eye Spray and how do I manage them?

The most commonly reported side effects are mild, transient stinging and brief blurred vision immediately after application — both of which usually resolve within a minute or two. If you experience persistent irritation, redness, or any signs of an allergic reaction such as swelling or difficulty breathing, stop using the product and seek medical advice promptly. Most people tolerate the spray well with regular use.

Can I use Fusion Allergy Eye Spray with contact lenses in?

No — you should always remove your contact lenses before applying the spray and wait at least 15 minutes before reinserting them. Using the spray with lenses in place is not recommended, as it may affect lens integrity or cause irritation. This applies to both soft and hard contact lenses.

Is Fusion Allergy Eye Spray suitable for children?

Suitability for children depends on the age guidance stated on the product packaging and patient information leaflet. Always check the PIL carefully and consult a pharmacist before using in children, particularly those under 12 years of age. A pharmacist can advise on the most appropriate treatment for younger patients.

Can I use Fusion Allergy Eye Spray during pregnancy or whilst breastfeeding?

If you are pregnant or breastfeeding, you should seek advice from your GP or pharmacist before using this product. Whilst topical sodium cromoglicate has limited systemic absorption, it is always best to confirm suitability with a healthcare professional during pregnancy or lactation. Do not self-treat without professional guidance in these circumstances.

How long can I use Fusion Allergy Eye Spray for?

Fusion Allergy Eye Spray can be used throughout the allergy season or for as long as symptoms persist, provided you follow the dosage instructions. Once opened, the bottle should be discarded after 28 days regardless of how much product remains. If your symptoms do not improve after a few weeks of regular use, speak to your GP or optometrist for further assessment.

What happens if I miss a dose of Fusion Allergy Eye Spray?

If you forget to apply the spray at your usual time, simply use it as soon as you remember and then continue with your regular schedule. Do not apply a double dose to make up for a missed one. Consistent, regular use throughout the day tends to give the best symptom control.

What are the alternatives to Fusion Allergy Eye Spray?

Alternatives include traditional sodium cromoglicate eye drops, antihistamine eye drops such as those containing azelastine or ketotifen, and lubricating eye drops that help wash allergens from the eye surface. You can explore a range of options in our eye care collection. Your pharmacist can help you choose the most suitable product based on your symptoms and lifestyle.

Is Fusion Allergy Eye Spray the same as an allergy eye spray used for hay fever?

Yes — Fusion Allergy Eye Spray is specifically designed to relieve the eye symptoms associated with hay fever, including itching, redness, and watering triggered by pollen. It can be used alongside other hay fever treatments such as antihistamine tablets or nasal sprays, which you can find in our allergy and hay fever collection. Always check with your pharmacist before combining multiple allergy treatments.

How should I store Fusion Allergy Eye Spray?

Store the spray below 25°C in a cool, dry place away from direct sunlight, and keep the cap on when not in use. Do not freeze the product, and keep it out of the reach of children at all times. Discard 28 days after first opening, even if product remains in the bottle.

What is the active ingredient in Fusion Allergy Eye Spray?

The active ingredient in Fusion Allergy Eye Spray is sodium cromoglicate, a mast cell stabiliser that prevents the release of histamine and other inflammatory mediators from mast cells in the conjunctiva. It is a well-established ingredient used in the management of allergic conjunctivitis. Sodium cromoglicate has a good safety profile and is available over the counter in the UK.

What is the latest research on allergy eye sprays like Fusion?

Research into ocular allergy management continues to support the use of mast cell stabilisers such as sodium cromoglicate as a first-line option for mild to moderate allergic conjunctivitis. Studies have also highlighted the convenience advantage of spray formats over traditional drops, particularly for patients who find drop instillation difficult. Always refer to NHS guidance and speak to your pharmacist or GP for the most up-to-date treatment recommendations.

How Should You Use Fusion Allergy Eye Spray?

Using Fusion Allergy Eye Spray correctly is straightforward, but a few simple steps make a real difference to how well it works. Always wash your hands before handling the bottle to avoid introducing bacteria near your eyes.

Avoid touching the nozzle tip to any surface, including your eyelid or skin, to prevent contamination of the bottle.

What Is the Correct Dose of Fusion Allergy Eye Spray?

The dose varies slightly depending on your age and the severity of your symptoms. Always follow the instructions on the product packaging or the advice of your pharmacist. Do not apply more sprays per application than stated, as this will not improve results and may cause unnecessary irritation.

When Is the Best Time to Use Fusion Allergy Eye Spray?

For seasonal allergies such as hay fever, using the spray before you go outdoors — particularly on high pollen count days — can help reduce the severity of symptoms before they start. Spacing your applications evenly throughout the day, for example morning, midday, afternoon, and evening, tends to maintain a more consistent level of protection. If your symptoms are worse at certain times of day, adjust your schedule accordingly and discuss this with your pharmacist.

How Long Can You Use Fusion Allergy Eye Spray For?

You can use Fusion Allergy Eye Spray for the duration of your allergy season or for as long as symptoms are present. There is no strict maximum treatment duration for sodium cromoglicate-based products when used as directed, but you should reassess your symptoms regularly. If your eyes are not improving after two to three weeks of consistent use, or if symptoms worsen at any point, speak to your GP or optometrist rather than continuing to self-treat. Remember to discard the bottle 28 days after first opening, even if product remains inside.

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 Fusion Allergy Eye Spray?

Most people who use Fusion Allergy Eye Spray tolerate it well, and side effects are generally mild and short-lived. The most frequently reported effects occur immediately after application and tend to resolve within a minute or two without any intervention.

  • Mild, transient stinging or burning sensation in the eye
  • Temporary blurred vision lasting a few seconds
  • Brief watering of the eye immediately after spraying

What Are the Less Common Side Effects of Fusion Allergy Eye Spray?

A smaller number of users may notice slightly more persistent effects, though these are still generally mild. If any of the following persist or worsen, stop using the product and seek advice from your pharmacist or GP.

  • A gritty or foreign body sensation in the eye
  • Mild redness of the conjunctiva (the white of the eye)
  • Localised irritation around the eyelid
  • Dryness or discomfort that does not resolve quickly

What Are the Serious Side Effects of Fusion Allergy Eye Spray?

Serious side effects are rare with topically applied sodium cromoglicate, given its very limited systemic absorption. However, hypersensitivity reactions can occasionally occur. Stop using the spray immediately and seek urgent medical attention if you experience any of the following:

  • Swelling of the face, lips, or throat
  • Difficulty breathing or swallowing
  • Severe eye pain or sudden changes in vision
  • Signs of a serious allergic reaction (anaphylaxis)

What Should You Do If You Experience Side Effects of Fusion Allergy Eye Spray?

For mild side effects such as brief stinging or blurred vision, no action is usually needed — simply wait a minute or two and the sensation should pass. If you find the stinging particularly uncomfortable, try keeping your eyes closed for a few seconds longer after spraying before blinking. For any side effect that persists, worsens, or concerns you, contact your pharmacist or GP for guidance. You can also report suspected side effects directly to the MHRA via the Yellow Card scheme at yellowcard.mhra.gov.uk.

Can Fusion Allergy Eye Spray Interact With Other Medicines?

No clinically significant interactions between topically applied sodium cromoglicate and other medicines have been identified. Because the spray is applied directly to the eye surface and systemic absorption is minimal, the risk of drug interactions is very low. If you are using other eye preparations at the same time — such as lubricating drops or antihistamine eye drops — allow at least five minutes between applications to avoid diluting either product. Always inform your pharmacist of all medicines you are taking, including over-the-counter products.

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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