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Allergy & Hayfever Relief Cetirizine and Optrex Allergy Eye Drops Bundle -30 Tablets

Allergy & Hayfever Relief Cetirizine and Optrex Allergy Eye Drops Bundle -30 Tablets

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  • ✔️ Relieves sneezing, itching, and runny nose from hayfever
  • ✔️ Targets itchy, red, watery eyes with Optrex eye drops
  • ✔️ Cetirizine 10mg works within one hour of taking
  • ✔️ Dual-action formula covers both nasal and eye symptoms
  • ✔️ Suitable for adults and children aged six and over

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What Is Cetirizine Hayfever Relief and How Does This Bundle Help?

 

Hayfever affects roughly one in five people in the UK, and for many, symptoms hit from multiple angles — sneezing, a streaming nose, and itchy, red eyes all at once. This bundle tackles that problem head-on by pairing cetirizine hayfever relief tablets with Optrex Allergy Eye Drops, giving you both systemic and localised relief in a single, cost-effective package. At just £6.50, it's a practical choice for anyone who wants to manage their allergy symptoms without juggling separate purchases. You can explore the full range of products in our allergy and hay fever collection if you need additional support.

The bundle contains 30 cetirizine hydrochloride 10mg tablets — a once-daily oral antihistamine — alongside Optrex Allergy Eye Drops containing sodium cromoglicate 2%. Together, they address both the whole-body histamine response and the specific discomfort of allergic conjunctivitis. It's a straightforward, clinically grounded combination that many hayfever sufferers find genuinely useful during peak pollen season.

 

How Do Cetirizine and Optrex Allergy Eye Drops Work?

 

Understanding how each component works helps you use them more effectively. Cetirizine is a second-generation antihistamine, which means it selectively blocks peripheral H1 histamine receptors without crossing the blood-brain barrier as readily as older antihistamines. The result? Fewer allergy symptoms with a lower risk of sedation compared to first-generation options like chlorphenamine.

  • Cetirizine tablets: Block H1 receptors, reducing sneezing, nasal congestion, itching, and urticaria triggered by allergens such as pollen, dust mites, and pet dander.
  • Optrex Allergy Eye Drops: Contain sodium cromoglicate, a mast cell stabiliser that prevents the release of histamine and other inflammatory mediators in the eye, reducing redness, itching, and watering.
  • Dual-action approach: The tablet addresses systemic symptoms; the eye drops target localised ocular inflammation directly at the site of irritation.

Cetirizine typically begins working within one hour of taking a dose, and its effects last for up to 24 hours. Sodium cromoglicate eye drops may take a few days of regular use to reach their full effect, so starting them before peak pollen season can be beneficial.

 

Who Should Use This Allergy and Hayfever Bundle?

 

This bundle is designed for adults and children aged 6 and over who experience seasonal allergic rhinitis (hayfever) and/or allergic conjunctivitis. It's particularly well-suited to people whose symptoms affect both their nose and eyes simultaneously — which, frankly, is most hayfever sufferers. If you find that a single antihistamine tablet isn't quite enough to control your eye symptoms, adding a topical eye drop like Optrex can make a noticeable difference.

  • Adults and teenagers with seasonal hayfever symptoms
  • People who experience itchy, red, or watery eyes alongside nasal symptoms
  • Those who prefer a non-drowsy antihistamine option for daytime use
  • Anyone looking to manage allergy symptoms without a GP appointment

 

How Does This Bundle Compare to Buying Separately?

 

Feature This Bundle Buying Separately
Cost £6.50 for both products Typically £4–£6 each
Symptom coverage Systemic + ocular Depends on products chosen
Convenience Single purchase, one delivery Multiple orders or trips
Suitable for Adults and children 6+ Varies by product

 

Is This Bundle Clinically Suitable and How Should It Be Stored?

 

Before using this bundle, it's worth checking a few things. Cetirizine is not recommended during pregnancy or breastfeeding without medical advice, and it should be used with caution in people with renal impairment, as the drug is primarily renally excreted. If you have a history of epilepsy or are taking other medicines that affect the central nervous system, speak to your pharmacist first. For those managing multiple allergy-related conditions, our eye care collection offers additional products that may complement your routine.

Store the cetirizine tablets below 25°C in a dry place, away from direct sunlight. Once opened, Optrex Allergy Eye Drops should be used within 28 days — note the opening date on the bottle. Keep all medicines out of the reach and sight of children. Do not use the eye drops whilst wearing soft contact lenses; wait at least 15 minutes after instilling drops before reinserting lenses.

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.

Allergy & Hayfever Relief Cetirizine and Optrex Allergy Eye Drops Bundle - 30 Tablets specifications
Treatment category Allergy / Hayfever / Allergic Conjunctivitis
Mechanism of action H1 receptor antagonist (cetirizine); Mast cell stabiliser (sodium cromoglicate)
Effective for Hayfever, allergic rhinitis, allergic conjunctivitis, urticaria
Suitable for Adults and children aged 6 years and over
Active ingredient (tablets) Cetirizine hydrochloride 10mg
Active ingredient (eye drops) Sodium cromoglicate 2%
Pack size 30 tablets + Optrex Allergy Eye Drops
Strength (tablets) 10mg
UK classification Pharmacy (P) medicine
Drug class Second-generation antihistamine; Mast cell stabiliser
Preparation Film-coated tablet; Sterile eye drops solution
Route of administration Oral (tablets); Ocular (eye drops)

Specifications of Allergy & Hayfever Relief Cetirizine and Optrex Allergy Eye Drops Bundle - 30 Tablets

 

What Is This Allergy Bundle and What Is It Used For?

 

This bundle combines two over-the-counter allergy treatments into one package. The cetirizine hydrochloride 10mg tablets are an antihistamine used to relieve the symptoms of hayfever (seasonal allergic rhinitis), perennial allergic rhinitis, and chronic urticaria (hives). The Optrex Allergy Eye Drops are used specifically to relieve the symptoms of allergic conjunctivitis — the itching, redness, and watering of the eyes that so often accompanies hayfever. Used together, they provide both systemic and targeted relief during allergy season.

Hayfever symptoms are triggered when your immune system overreacts to airborne allergens such as grass pollen, tree pollen, or mould spores. The NHS notes that hayfever is very common, particularly between late March and September when pollen counts are highest. This bundle is designed to help you get through those months with fewer disruptions to your daily life.

 

What Do You Need to Know Before Using This Allergy Bundle?

 

Do not use the cetirizine tablets if any of the following apply to you:

  • You are allergic to cetirizine hydrochloride, hydroxyzine, or any other ingredient in the tablets
  • You have severe kidney disease (end-stage renal failure with creatinine clearance below 10 ml/min)
  • You are pregnant or breastfeeding — seek medical advice first
  • You are under 6 years of age

Do not use the Optrex Allergy Eye Drops if:

  • You are allergic to sodium cromoglicate or any other ingredient in the drops
  • You are wearing soft contact lenses at the time of instillation

The following medicines may interact with cetirizine. Always tell your pharmacist or doctor what you are taking:

  • Alcohol — may increase sedative effects
  • Sedatives, sleeping tablets, or anxiolytics — risk of increased drowsiness
  • Ritonavir (used in HIV treatment) — may increase cetirizine plasma levels
  • Other antihistamines — avoid concurrent use

 

How Should You Use This Allergy and Hayfever Bundle?

 

Always read the patient information leaflet supplied with each product before use. Follow these steps for the cetirizine tablets:

  1. Take one tablet by mouth with a glass of water.
  2. Swallow the tablet whole — do not crush or chew.
  3. Take once daily, at the same time each day if possible.
  4. You can take it with or without food.
  5. Do not take more than one tablet in any 24-hour period.

For the Optrex Allergy Eye Drops:

  1. Wash your hands thoroughly before use.
  2. Tilt your head back and gently pull down the lower eyelid.
  3. Instil 1–2 drops into each affected eye.
  4. Blink gently and avoid rubbing your eyes.
  5. Use up to four times daily, or as directed on the packaging.
  6. Replace the cap immediately after use and note the date of opening.
Product Age Group Dose Frequency
Cetirizine 10mg tablets Adults and children 12+ 1 tablet (10mg) Once daily
Cetirizine 10mg tablets Children 6–11 years ½ tablet (5mg) Once or twice daily
Optrex Allergy Eye Drops Adults and children 6+ 1–2 drops per eye Up to 4 times daily

 

What Are the Possible Side Effects of This Allergy Bundle?

 

Like all medicines, cetirizine and sodium cromoglicate eye drops can cause side effects, although not everyone experiences them. Knowing what to look out for helps you use these products safely.

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

  • Drowsiness or fatigue
  • Dry mouth
  • Headache
  • Dizziness
  • Gastrointestinal discomfort (nausea, abdominal pain)

Less common side effects of cetirizine:

  • Agitation or restlessness (more common in children)
  • Paraesthesia (tingling or numbness)
  • Urinary retention
  • Skin rash or pruritus

Side effects associated with Optrex Allergy Eye Drops:

  • Transient stinging or burning immediately after instillation
  • Temporary blurred vision
  • Eye irritation

Stop using either product and seek immediate medical attention if you experience signs of a serious allergic reaction, such as swelling of the face, lips, or throat, difficulty breathing, or a severe skin rash. If you're also managing other eye-related conditions, it may be worth browsing our eye care collection for complementary products.

 

How Should You Store This Allergy Bundle?

 

  • Store cetirizine tablets below 25°C in a dry place, away from direct sunlight and moisture.
  • Keep the Optrex Allergy Eye Drops at room temperature; do not refrigerate unless stated on the packaging.
  • Discard the eye drops 28 days after first opening — write the opening date on the bottle.
  • Keep all medicines out of the reach and sight of children.
  • Do not use either product after the expiry date printed on the packaging.
  • Do not dispose of medicines via wastewater or household waste — return unused medicines to your pharmacy.

For those looking to manage a broader range of allergy-related symptoms, our allergy and hay fever collection includes a variety of antihistamines, nasal sprays, and combination products to suit different needs.

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 the cetirizine and Optrex allergy bundle online in the UK?

You can buy this bundle directly from Cured Pharmacy online for just £6.50 — no prescription required. It's available as an over-the-counter pharmacy medicine and can be ordered from the comfort of your home. Browse our full allergy and hay fever collection for more options if needed.

How does cetirizine hayfever relief work in the body?

Cetirizine is a second-generation antihistamine that selectively blocks peripheral H1 histamine receptors, preventing histamine from triggering allergy symptoms such as sneezing, itching, and a runny nose. It is less likely to cause sedation than older antihistamines because it crosses the blood-brain barrier to a lesser degree. Effects typically begin within one hour and last for up to 24 hours.

How do I use the Optrex Allergy Eye Drops step by step?

Wash your hands before use, then tilt your head back and gently pull down your lower eyelid to create a small pocket. Instil 1–2 drops into each affected eye, blink gently, and avoid rubbing. Use up to four times daily and discard the bottle 28 days after opening.

What is the correct dose of cetirizine for adults and children?

Adults and children aged 12 and over should take one 10mg tablet once daily. Children aged 6–11 years should take half a tablet (5mg) once or twice daily, depending on symptom severity. Never exceed the recommended dose, and always consult a pharmacist if you are unsure about dosing for a child.

What is the best time to take cetirizine hayfever relief tablets?

Cetirizine can be taken at any time of day, but taking it at the same time each day helps maintain consistent blood levels. If you find it causes mild drowsiness, taking it in the evening may be more convenient. Some people prefer a morning dose to ensure protection throughout the day when pollen counts are highest.

Can I take cetirizine and use Optrex eye drops at the same time?

Yes, cetirizine tablets and Optrex Allergy Eye Drops can generally be used together safely, as they work via different mechanisms and different routes of administration. The tablet addresses whole-body allergy symptoms, while the eye drops target localised ocular irritation. Always read both product leaflets and speak to your pharmacist if you have any concerns.

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

The most common side effects of cetirizine include drowsiness, dry mouth, headache, and fatigue. If drowsiness is a problem, try taking your tablet in the evening rather than the morning. Staying well hydrated can help with dry mouth, and most side effects tend to settle after the first few days of use.

Who is eligible to use this allergy and hayfever bundle?

This bundle is suitable for adults and children aged 6 years and over who experience hayfever, allergic rhinitis, or allergic conjunctivitis. It is not suitable for people with severe kidney disease, those allergic to cetirizine or sodium cromoglicate, or children under 6. Pregnant or breastfeeding women should seek medical advice before use.

What happens if I miss a dose of cetirizine?

If you miss a dose, 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 a double dose to make up for a missed one. Cetirizine's 24-hour duration of action means a single missed dose is unlikely to cause a significant gap in symptom control.

Is cetirizine non-drowsy compared to other antihistamines?

Cetirizine is classified as a second-generation antihistamine and is considered less sedating than first-generation options such as chlorphenamine. However, it can still cause drowsiness in some individuals, so you should assess your own response before driving or operating machinery. If drowsiness is a significant concern, speak to your pharmacist about alternatives.

What are the alternatives to this cetirizine and Optrex bundle?

Alternatives to cetirizine include other second-generation antihistamines such as loratadine and fexofenadine, which are also available over the counter. For eye symptoms, alternatives to sodium cromoglicate drops include olopatadine or ketotifen eye drops. You can explore a range of options in our allergy and hay fever collection.

How long can you use cetirizine hayfever relief tablets for?

Cetirizine can be used throughout the hayfever season, which typically runs from late March to September in the UK, depending on which pollens trigger your symptoms. For perennial allergic rhinitis caused by year-round allergens like dust mites or pet dander, longer-term use may be appropriate under pharmacist or GP guidance. If symptoms persist or worsen, seek medical advice.

Can I use Optrex Allergy Eye Drops with contact lenses?

You should not instil Optrex Allergy Eye Drops whilst wearing soft contact lenses, as the preservatives in the drops can be absorbed by soft lens material and cause irritation. Remove your lenses before applying the drops and wait at least 15 minutes before reinserting them. Hard (rigid gas-permeable) lenses should also be removed prior to use.

What does the latest research say about cetirizine for hayfever?

Cetirizine has been extensively studied and is well-established as an effective, well-tolerated antihistamine for allergic rhinitis and urticaria. Clinical evidence consistently supports its efficacy in reducing nasal and ocular allergy symptoms with a favourable safety profile compared to first-generation antihistamines. It remains one of the most widely recommended OTC antihistamines by UK pharmacists and GPs.

Is this bundle good value compared to buying products separately?

At £6.50 for both cetirizine tablets and Optrex Allergy Eye Drops, this bundle offers genuine savings compared to purchasing each product individually, where costs can easily reach £8–£12 combined. It also saves you the inconvenience of separate orders or pharmacy trips. For those managing seasonal allergies on a budget, it's a sensible, clinically sound choice.

How Should You Use This Allergy and Hayfever Bundle?

Using this bundle correctly ensures you get the most from both products. Always read the patient information leaflet supplied with each item before starting treatment, and follow the steps below carefully.

For the cetirizine tablets, follow these steps:

What Is the Correct Dose of This Allergy Bundle?

Dosing varies depending on age and the product being used. The table below summarises the recommended doses for both components of this bundle. Always follow the product leaflet and do not exceed the stated dose.

When Is the Best Time to Use This Allergy Bundle?

Timing your doses thoughtfully can make a real difference to how well your symptoms are controlled. Cetirizine is a once-daily tablet, so taking it at a consistent time — whether morning or evening — helps keep antihistamine levels steady in your bloodstream throughout the day.

If you find cetirizine causes mild drowsiness, an evening dose may suit you better. For the Optrex Allergy Eye Drops, use them as soon as eye symptoms appear and continue regularly throughout the day — sodium cromoglicate works best when used consistently rather than just when symptoms flare. Starting the eye drops a few days before peak pollen season can also help prevent symptoms from taking hold.

How Long Can You Use This Allergy Bundle For?

Cetirizine tablets can be used throughout the hayfever season, which typically runs from late March to September in the UK, depending on which pollens affect you. For perennial allergic rhinitis triggered by year-round allergens such as dust mites or pet dander, longer-term use may be appropriate — but it's worth discussing this with your pharmacist or GP if you plan to use it for more than a few months continuously.

The Optrex Allergy Eye Drops must be discarded 28 days after first opening, regardless of how much remains in the bottle. Do not use either product beyond its expiry date. If your symptoms do not improve after a few weeks of regular use, or if they worsen at any point, seek advice from your pharmacist or GP.

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

How Should You Use This Allergy and Hayfever Bundle?

Using this bundle correctly ensures you get the most from both products. Always read the patient information leaflet supplied with each item before starting treatment, and follow the steps below carefully.

For the cetirizine tablets, follow these steps:

What Is the Correct Dose of This Allergy Bundle?

Dosing varies depending on age and the product being used. The table below summarises the recommended doses for both components of this bundle. Always follow the product leaflet and do not exceed the stated dose.

When Is the Best Time to Use This Allergy Bundle?

Timing your doses thoughtfully can make a real difference to how well your symptoms are controlled. Cetirizine is a once-daily tablet, so taking it at a consistent time — whether morning or evening — helps keep antihistamine levels steady in your bloodstream throughout the day.

If you find cetirizine causes mild drowsiness, an evening dose may suit you better. For the Optrex Allergy Eye Drops, use them as soon as eye symptoms appear and continue regularly throughout the day — sodium cromoglicate works best when used consistently rather than just when symptoms flare. Starting the eye drops a few days before peak pollen season can also help prevent symptoms from taking hold.

How Long Can You Use This Allergy Bundle For?

Cetirizine tablets can be used throughout the hayfever season, which typically runs from late March to September in the UK, depending on which pollens affect you. For perennial allergic rhinitis triggered by year-round allergens such as dust mites or pet dander, longer-term use may be appropriate — but it's worth discussing this with your pharmacist or GP if you plan to use it for more than a few months continuously.

The Optrex Allergy Eye Drops must be discarded 28 days after first opening, regardless of how much remains in the bottle. Do not use either product beyond its expiry date. If your symptoms do not improve after a few weeks of regular use, or if they worsen at any point, seek advice from your pharmacist or GP.

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

What Are the Most Common Side Effects of This Allergy Bundle?

Most people tolerate cetirizine and Optrex Allergy Eye Drops well, but like all medicines, they can cause side effects in some individuals. Knowing what to expect helps you use these products with confidence.

  • Drowsiness or fatigue
  • Dry mouth
  • Headache
  • Dizziness
  • Nausea or mild stomach discomfort
  • Transient stinging or burning in the eye immediately after instilling the drops
  • Temporary blurred vision after using the eye drops

What Are the Less Common Side Effects of This Allergy Bundle?

Less common side effects occur in fewer than 1 in 100 people. They are generally mild and tend to resolve on their own, but you should mention them to your pharmacist if they persist or bother you.

  • Agitation or restlessness (more frequently reported in children)
  • Paraesthesia (tingling or pins and needles)
  • Urinary retention or difficulty passing urine
  • Skin rash or itching not related to the original allergy
  • Palpitations
  • Persistent eye irritation or redness after using the drops

What Are the Serious Side Effects of This Allergy Bundle?

Serious side effects are rare but require immediate medical attention. Stop using the product straight away and call 999 or go to your nearest A&E if you experience any of the following after taking cetirizine or using the eye drops.

Signs of a serious allergic reaction (anaphylaxis) include sudden swelling of the face, lips, tongue, or throat, difficulty breathing or swallowing, a rapid heartbeat, or a severe skin rash. Seizures have been reported very rarely with cetirizine. If you experience any of these symptoms, do not take another dose and seek emergency help immediately.

What Should You Do If You Experience Side Effects?

For mild side effects such as drowsiness, try switching to an evening dose of cetirizine. Dry mouth can often be managed by drinking plenty of water throughout the day. If the eye drops cause persistent stinging or your eye symptoms worsen rather than improve, stop using them and consult your pharmacist.

You can also report suspected side effects directly to the MHRA via the Yellow Card scheme at yellowcard.mhra.gov.uk. This helps regulators monitor the safety of medicines in real-world use and is something any patient can do — not just healthcare professionals.

Can This Allergy Bundle Interact With Other Medicines?

Cetirizine can interact with certain medicines and substances. Alcohol and other central nervous system depressants — including sedatives, sleeping tablets, and anxiolytics — can increase the sedative effects of cetirizine, so avoid alcohol whilst taking it. Ritonavir, used in HIV treatment, may increase cetirizine plasma concentrations. Avoid taking cetirizine alongside other antihistamines unless specifically advised by a healthcare professional.

The Optrex Allergy Eye Drops have a low risk of systemic drug interactions given their localised route of administration, but you should still inform your pharmacist of all medicines you are taking, including other eye drops. If you are using multiple eye preparations, leave at least five minutes between instilling each one.

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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