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Treathay Fexofenadine 30 Tablets 120mg

Treathay Fexofenadine 30 Tablets 120mg

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  • ✔️ Relieves sneezing, itching, and runny nose from hayfever
  • ✔️ Non-drowsy formula — safe for driving and daily tasks
  • ✔️ Once-daily 120mg dose for all-day symptom control
  • ✔️ Suitable for adults and adolescents aged 12 and over
  • ✔️ 30-tablet pack provides a full month of hayfever relief

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What Are Fexofenadine 120mg Tablets Used For?

 

Hayfever affects around one in five people in the UK at some point in their lives, and finding a reliable, non-drowsy solution matters — especially when you need to stay sharp at work or behind the wheel. Fexofenadine 120mg tablets offer targeted relief from the sneezing, itching, runny nose, and watery eyes that come with seasonal allergic rhinitis. Treathay Fexofenadine 30 Tablets 120mg, available from Cured Pharmacy for just £5.29, gives you a full month's supply at an accessible price. If you're exploring your options for managing seasonal symptoms, our allergy and hay fever collection has a range of treatments to suit different needs.

Fexofenadine is a second-generation antihistamine, which means it's designed to work without the sedating effects associated with older antihistamines like chlorphenamine. It's licensed in the UK for the relief of symptoms of seasonal allergic rhinitis in adults and adolescents aged 12 and over.

 

How Does Fexofenadine Work in the Body?

 

When your immune system encounters an allergen — pollen, for instance — it triggers the release of histamine, a chemical that causes the familiar cascade of hayfever symptoms. Fexofenadine works by selectively blocking peripheral H1 histamine receptors, preventing histamine from binding and triggering those reactions.

  • Histamine is released in response to allergen exposure
  • Fexofenadine binds to H1 receptors in the nose, eyes, and skin
  • Receptor blockade prevents the inflammatory response
  • Because fexofenadine has poor penetration of the blood-brain barrier, it causes minimal sedation compared to first-generation antihistamines

The result? Symptom relief that lets you get on with your day without feeling foggy or fatigued.

 

Who Is Suitable for Fexofenadine 120mg Tablets?

 

This product is well suited to a broad range of people dealing with seasonal allergic rhinitis. It's particularly useful for those who have found older antihistamines too sedating, or who need to remain alert throughout the day.

  • Adults and adolescents aged 12 and over
  • People who drive or operate machinery and need a non-drowsy option
  • Those who experience hayfever symptoms during spring and summer pollen seasons
  • Individuals who have not responded adequately to other antihistamines

It is not recommended for children under 12, and you should seek medical advice before use if you are pregnant, breastfeeding, or have significant kidney impairment.

 

How Does Fexofenadine Compare to Other Antihistamines?

 

Feature Treathay Fexofenadine 120mg Cetirizine 10mg
Generation Second-generation Second-generation
Drowsiness risk Very low Low to moderate
Dosing frequency Once daily Once daily
Suitable age 12 years and over 6 years and over

 

How Should Fexofenadine 120mg Tablets Be Stored?

 

Store Treathay fexofenadine 120mg tablets below 25°C in a dry place, away from direct sunlight. Keep the tablets in their original packaging and ensure they are stored out of the reach and sight of children. Do not use the tablets after the expiry date printed on the pack.

One important point worth knowing: fexofenadine absorption can be significantly reduced by fruit juices — particularly grapefruit, orange, and apple juice. Always take your tablet with a glass of water. If you're also managing eye-related allergy symptoms, you might find our eye care collection a helpful complement to your hayfever 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.

Treathay Fexofenadine 30 Tablets 120mg specifications
Treatment category Allergy & Hay Fever
Mechanism of action Selective peripheral H1 histamine receptor antagonist
Effective for Seasonal allergic rhinitis (hayfever)
Suitable for Adults and adolescents aged 12 and over
Active ingredient Fexofenadine hydrochloride 120mg
Pack size 30 tablets
Strength 120mg
UK classification General Sale List (GSL) / Pharmacy (P) medicine
Drug class Second-generation antihistamine
Preparation Film-coated tablet
Route of administration Oral

Specifications of Treathay Fexofenadine 30 Tablets 120mg

 

What Is Treathay Fexofenadine and What Is It Used For?

 

Treathay Fexofenadine 30 Tablets 120mg contains fexofenadine hydrochloride, a second-generation antihistamine used to relieve the symptoms of seasonal allergic rhinitis — commonly known as hayfever. Symptoms it targets include sneezing, itchy and watery eyes, runny or blocked nose, and itching of the nose and throat. It is intended for use in adults and adolescents aged 12 years and over. Unlike older antihistamines, fexofenadine is classed as non-drowsy because it does not readily cross the blood-brain barrier.

 

What Do You Need to Know Before Using Treathay Fexofenadine?

 

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

  • You are allergic to fexofenadine hydrochloride or any other ingredient in the tablet
  • You are under 12 years of age
  • You have severe kidney (renal) impairment — seek medical advice first
  • You are pregnant or breastfeeding without first consulting your doctor or pharmacist

Take care and speak to your pharmacist or GP if you have mild to moderate kidney problems, as your dose may need to be adjusted. The following medicines may interact with fexofenadine:

  • Antacids containing aluminium or magnesium hydroxide — take fexofenadine at least 2 hours before or after these
  • Erythromycin (an antibiotic) — may increase fexofenadine blood levels
  • Ketoconazole (an antifungal) — may increase fexofenadine blood levels

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

 

How Should You Use Treathay Fexofenadine Correctly?

 

Always use this medicine exactly as described in this leaflet or as directed by your pharmacist. The standard dosing instructions are straightforward, but a few key points make a real difference to how well the medicine works.

  1. Take one 120mg tablet once daily
  2. Swallow the tablet whole with a full glass of water — do not crush or chew
  3. Do not take with fruit juice (grapefruit, orange, or apple) as this reduces absorption
  4. The tablet can be taken with or without food
  5. Try to take it at the same time each day for consistent symptom control
Indication Age Group Dose Frequency
Seasonal allergic rhinitis Adults & adolescents (12+) 120mg (1 tablet) Once daily
Seasonal allergic rhinitis Children under 12 Not recommended

 

What Are the Possible Side Effects of Treathay Fexofenadine?

 

Like all medicines, fexofenadine can cause side effects, although not everyone experiences them. Knowing what to look out for helps you manage your treatment confidently. If you're also dealing with cold or flu symptoms alongside your allergy, our cold and flu collection may offer additional support.

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

  • Headache
  • Dizziness
  • Nausea
  • Drowsiness (though less common than with older antihistamines)

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

  • Fatigue or tiredness
  • Dry mouth
  • Insomnia
  • Nervousness

Rarely, fexofenadine may cause hypersensitivity reactions including skin rash, urticaria (hives), or, in very rare cases, anaphylaxis. Stop taking the medicine and seek immediate medical attention if you develop difficulty breathing, swelling of the face, lips, or throat, or a severe skin reaction.

 

How Should You Store Treathay Fexofenadine Safely?

 

Correct storage keeps your tablets effective for their full shelf life. Follow these simple guidelines:

  • Store below 25°C in a dry place
  • Keep away from direct sunlight and moisture
  • Store in the original packaging until use
  • Keep out of the reach and sight 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 have any questions about your treatment or need further allergy support, our ear, nose and throat collection includes additional products that may help with related symptoms.

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 fexofenadine 120mg tablets online in the UK?

You can buy Treathay Fexofenadine 120mg tablets directly from Cured Pharmacy, a GPhC-registered UK online pharmacy. No prescription is required, as fexofenadine 120mg is available over the counter for adults and adolescents aged 12 and over. Browse our full allergy and hay fever collection for more options.

How does fexofenadine 120mg work in the body?

Fexofenadine is a selective H1 antihistamine that blocks histamine receptors in the nose, eyes, and skin, preventing the allergic response triggered by pollen and other allergens. Because it has very poor penetration of the blood-brain barrier, it causes significantly less drowsiness than older antihistamines. This makes it particularly suitable for people who need to stay alert during the day.

How do I take Treathay Fexofenadine 120mg step by step?

Take one tablet once daily, swallowed whole with a full glass of water — never with fruit juice, as this reduces how well the medicine is absorbed. You can take it with or without food, and it works best when taken at the same time each day. Do not crush or chew the tablet.

What is the best time of day to take fexofenadine 120mg?

Most people take fexofenadine in the morning so it provides symptom relief throughout the day, particularly during peak pollen hours. However, the most important thing is consistency — take it at the same time each day to maintain steady levels in your system. There is no clinical evidence that morning dosing is significantly more effective than evening dosing.

What are the side effects of fexofenadine 120mg and how do I manage them?

The most commonly reported side effects include headache, dizziness, and nausea, which are usually mild and short-lived. If you experience drowsiness — though this is uncommon — avoid driving or operating machinery until you know how the medicine affects you. Contact your pharmacist or GP if side effects persist or concern you.

Who is eligible to take fexofenadine 120mg tablets?

Fexofenadine 120mg is suitable for adults and adolescents aged 12 and over who experience seasonal allergic rhinitis symptoms. It is not recommended for children under 12, and people with kidney problems, or those who are pregnant or breastfeeding, should seek medical advice before use. Always read the label and speak to a pharmacist if you are unsure.

What happens if I miss a dose of fexofenadine?

If you forget to take your tablet, take it as soon as you remember — unless it is nearly time for your next scheduled dose, in which case simply skip the missed one. Never take two tablets at once to compensate for a missed dose. Continuing your regular schedule is the safest approach.

Can I take fexofenadine 120mg with other medicines?

Fexofenadine can interact with certain medicines, including antacids containing aluminium or magnesium hydroxide, erythromycin, and ketoconazole — all of which can affect how much fexofenadine your body absorbs. Always tell your pharmacist about any other medicines, supplements, or herbal remedies you are taking. If you take antacids, leave at least a two-hour gap before or after your fexofenadine dose.

How does fexofenadine compare to cetirizine for hayfever?

Both are second-generation antihistamines taken once daily, but fexofenadine is generally associated with a lower risk of drowsiness than cetirizine, making it a preferred choice for people who drive or need to stay mentally sharp. Cetirizine is licensed for use in younger children (from age 6), whereas fexofenadine 120mg is for those aged 12 and over. The right choice depends on your individual circumstances and any previous response to antihistamines.

Is fexofenadine 120mg safe to take every day during hayfever season?

Yes, fexofenadine 120mg is designed for daily use throughout the hayfever season and is considered safe for continuous use when taken as directed. Clinical studies support its use over the typical pollen season without significant safety concerns. If your symptoms persist beyond the expected season or worsen, speak to your GP.

How long does it take for fexofenadine 120mg to start working?

Fexofenadine typically begins to relieve hayfever symptoms within one to three hours of taking the first dose. Peak plasma concentrations are reached in approximately one to three hours, and the effect lasts for up to 24 hours with once-daily dosing. Some people notice improvement sooner, particularly if they have taken antihistamines before.

Can I drink alcohol while taking fexofenadine 120mg?

Fexofenadine is not known to interact significantly with alcohol in the way that older, sedating antihistamines do. However, alcohol itself can worsen allergy symptoms and cause drowsiness, so it is sensible to drink in moderation while managing hayfever. If you notice any unusual drowsiness after combining the two, avoid driving or operating machinery.

What are the alternatives to fexofenadine for hayfever?

Common alternatives include cetirizine, loratadine, and acrivastine — all second-generation antihistamines available over the counter in the UK. For more severe or persistent symptoms, a GP may recommend nasal corticosteroid sprays or allergen immunotherapy. You can explore a range of over-the-counter options in our allergy and hay fever collection.

How long can you take fexofenadine 120mg for?

Fexofenadine 120mg is intended for use during the hayfever season, which in the UK typically runs from late March through to September depending on the pollen type. It can be taken daily throughout this period without the need to take breaks. If you find you need it year-round, speak to your GP to rule out perennial allergic rhinitis or other underlying conditions.

What are the latest studies on fexofenadine for hayfever?

Fexofenadine has been extensively studied since its introduction and remains one of the most well-evidenced non-drowsy antihistamines available. Research continues to confirm its favourable safety profile, particularly its minimal effect on cognitive function and psychomotor performance compared to first-generation antihistamines. It is recommended in NHS guidance as a first-line option for seasonal allergic rhinitis.

How Should You Use Treathay Fexofenadine 120mg Tablets?

Using fexofenadine correctly makes a real difference to how well it controls your hayfever symptoms. Follow these steps each time you take your tablet to get the most from your treatment.

If you accidentally take more than one tablet in a day, contact your pharmacist or NHS 111 for advice. Do not take a double dose to make up for a missed one.

What Is the Correct Dose of Treathay Fexofenadine 120mg?

The recommended dose for adults and adolescents aged 12 and over is one 120mg tablet taken once daily. Do not exceed this dose unless directed by a healthcare professional.

If you have kidney problems, your pharmacist or GP may recommend a lower dose or an alternative treatment. Always disclose any existing health conditions before starting a new medicine.

When Is the Best Time to Use Treathay Fexofenadine 120mg?

Taking your tablet in the morning is a practical choice for most people, as it ensures symptom relief is active during the hours when pollen counts are typically highest — usually between 5am and 10am, and again in the early evening. Consistency matters more than the specific time of day, so choose a time that fits naturally into your daily routine and stick to it.

If you find morning dosing causes any mild stomach discomfort, taking it with a light breakfast (and water, not juice) can help. There is no clinical requirement to take it at a specific time, so adapt it to what works best for you.

How Long Can You Use Treathay Fexofenadine 120mg For?

Fexofenadine 120mg is suitable for daily use throughout the hayfever season, which in the UK typically spans from late March to September — though this varies depending on whether you are sensitive to tree, grass, or weed pollen. It is safe to take continuously during this period without needing to take breaks from treatment.

If your symptoms persist outside the usual pollen season, or if you find you need antihistamines year-round, speak to your GP. You may have perennial allergic rhinitis, which requires a different management approach. 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 Treathay Fexofenadine 120mg?

Fexofenadine is generally well tolerated, and most people experience no side effects at all. However, as with any medicine, some people may notice mild reactions, particularly when first starting treatment. Common side effects — those affecting up to 1 in 10 people — include:

  • Headache
  • Dizziness
  • Nausea
  • Drowsiness (less frequent than with older antihistamines, but possible)

These effects are usually mild and tend to resolve on their own. If a headache persists, staying well hydrated and taking the tablet with food may help.

What Are the Less Common Side Effects of Treathay Fexofenadine 120mg?

Less common side effects — affecting up to 1 in 100 people — are generally mild but worth being aware of. If any of the following bother you or do not go away, speak to your pharmacist:

  • Fatigue or unusual tiredness
  • Dry mouth
  • Insomnia or difficulty sleeping
  • Nervousness or feeling on edge
  • Abdominal discomfort

These effects are not a reason to stop treatment in most cases, but your pharmacist can advise on whether to continue or switch to an alternative.

What Are the Serious Side Effects of Treathay Fexofenadine 120mg?

Serious side effects are rare but require immediate medical attention. Stop taking fexofenadine and seek emergency help if you experience any of the following signs of a severe allergic reaction (anaphylaxis):

  • Difficulty breathing or swallowing
  • Swelling of the face, lips, tongue, or throat
  • Severe skin rash, hives (urticaria), or widespread itching
  • Rapid or irregular heartbeat (palpitations)

These reactions are very uncommon, but if they occur, call 999 or go to your nearest A&E immediately. Do not take another dose.

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

For mild side effects such as headache or nausea, try taking the tablet with food and water, and ensure you are well hydrated throughout the day. If drowsiness occurs — even though fexofenadine is classed as non-drowsy — avoid driving or operating heavy machinery until you know how the medicine affects you personally. You can also report any suspected side effects directly to the MHRA via the Yellow Card scheme at yellowcard.mhra.gov.uk.

Can Treathay Fexofenadine 120mg Interact With Other Medicines?

Yes, certain medicines can affect how fexofenadine works in your body. The most clinically significant interactions include antacids containing aluminium or magnesium hydroxide, which can reduce fexofenadine absorption — leave at least a two-hour gap between these and your fexofenadine dose. Erythromycin (an antibiotic) and ketoconazole (an antifungal) may increase fexofenadine blood levels, potentially intensifying side effects. Always inform your pharmacist or GP of all medicines, supplements, and herbal products you are taking before starting fexofenadine. 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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