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Treathay Fexofenadine 120mg - 10 tablets

Treathay Fexofenadine 120mg - 10 tablets

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  • ✔️ Relieves sneezing, itching, and runny nose from hay fever
  • ✔️ Non-drowsy formula — safe for driving and daily activities
  • ✔️ Once-daily 120mg dose for all-day symptom control
  • ✔️ Suitable for adults and children aged 12 and over
  • ✔️ Starts working within hours of the first dose

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Is Fexofenadine 120mg Right for Your Hay Fever?

 

Hay fever affects millions of people across the UK every year, and finding a reliable, non-drowsy solution can make a real difference to your daily life. Fexofenadine 120mg — available here as Treathay Fexofenadine 120mg 10 tablets — is a second-generation antihistamine licensed for the relief of seasonal allergic rhinitis symptoms in adults and children aged 12 and over. Whether it's the relentless sneezing, itchy eyes, or a constantly blocked nose, this tablet is designed to tackle those symptoms without leaving you feeling foggy or fatigued. You can browse our full range of allergy and hay fever treatments if you're looking for additional options alongside this product.

Fexofenadine works differently from older antihistamines like chlorphenamine. It's far less likely to cause sedation, which means you can take it before work, before driving, or at any point in your day without worrying about impaired concentration. At just £3.39 for a pack of 10 tablets, it's an accessible, clinically recognised option for managing seasonal allergy symptoms.

 

How Does Treathay Fexofenadine 120mg Work?

 

When your immune system encounters an allergen — pollen, for instance — it triggers the release of a chemical called histamine. Histamine then binds to H1 receptors throughout your body, causing the familiar cascade of allergy symptoms: sneezing, itching, watery eyes, and nasal congestion. Fexofenadine works by selectively blocking those H1 receptors, stopping histamine from binding and preventing the allergic response before it takes hold.

  • Fexofenadine is absorbed quickly after oral administration, with peak plasma concentrations typically reached within one to three hours.
  • It does not cross the blood-brain barrier to any significant degree, which is why it causes far less drowsiness than first-generation antihistamines.
  • It is not metabolised by the liver's cytochrome P450 system to a meaningful extent, reducing the risk of many common drug interactions.
  • Effects can last for up to 24 hours, making once-daily dosing sufficient for most people.

 

Who Should Use Treathay Fexofenadine 120mg Tablets?

 

This product is suitable for a broad range of people dealing with seasonal allergic rhinitis. It's particularly well-suited to those who have found older antihistamines too sedating, or who need to remain alert throughout the day. That said, it's not appropriate for everyone — always read the label carefully.

  • Adults and children aged 12 years and over experiencing hay fever symptoms.
  • People who drive, operate machinery, or need to stay mentally sharp during the day.
  • Those who have not responded adequately to other antihistamines.
  • Individuals looking for a once-daily tablet that fits easily into a daily routine.

 

How Does Fexofenadine 120mg Compare to Other Antihistamines?

 

Feature 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

 

Is Fexofenadine 120mg Suitable for Long-Term Use?

 

For most people, fexofenadine 120mg is well tolerated throughout the hay fever season. It can be used daily for the duration of your symptoms, though if you find yourself needing it year-round, it's worth speaking to your GP to rule out perennial allergic rhinitis or other underlying conditions. If you also experience allergy-related eye symptoms, you might find it helpful to explore our eye care range for complementary relief.

Store this product below 25°C in a dry place, away from direct sunlight and out of the reach of children. Do not use after the expiry date printed on the packaging.

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 120mg - 10 tablets specifications
Treatment category Allergy & Hay Fever
Active ingredient Fexofenadine hydrochloride 120mg
Mechanism of action Selective H1 histamine receptor antagonist
Drug class Second-generation antihistamine
Suitable for Adults and children aged 12 years and over
Pack size 10 tablets
Strength 120mg
UK classification P (Pharmacy medicine)
Preparation Film-coated tablet
Route of administration Oral
Effective for Seasonal allergic rhinitis (hay fever)

Specifications of Treathay Fexofenadine 120mg - 10 tablets

 

What Is Treathay Fexofenadine 120mg and What Is It Used For?

 

Treathay Fexofenadine 120mg tablets contain fexofenadine hydrochloride, a non-drowsy antihistamine used to relieve the symptoms of seasonal allergic rhinitis — commonly known as hay fever. Symptoms it can help with include sneezing, a runny or blocked nose, itchy eyes, and an itchy throat or palate. It is licensed for use in adults and adolescents aged 12 years and over and is taken once daily. Fexofenadine 120mg is classified as a Pharmacy (P) medicine in the UK, meaning it can be purchased without a prescription from a registered pharmacy.

 

What Do You Need to Know Before Using Treathay Fexofenadine 120mg?

 

Before taking this medicine, it's important to check whether it is appropriate for you. Do not take fexofenadine 120mg if any of the following apply:

  • You are allergic to fexofenadine hydrochloride or any of the other ingredients in the tablet.
  • You are under 12 years of age.
  • You are pregnant or breastfeeding, unless advised by a doctor.
  • You have severe kidney impairment — your doctor may need to adjust your dose.

The following medicines and substances are known to interact with fexofenadine:

  • Antacids containing aluminium or magnesium hydroxide — these can reduce the absorption of fexofenadine and should not be taken within two hours of this tablet.
  • Fruit juices (grapefruit, orange, and apple) — these can significantly reduce the amount of fexofenadine absorbed into your bloodstream. Always take this tablet with water.
  • Erythromycin and ketoconazole — these medicines may increase fexofenadine levels in the blood; speak to your pharmacist if you are taking either of these.

 

How Should You Use Treathay Fexofenadine 120mg?

 

Always use this medicine exactly as described on the label or as directed by your pharmacist. Do not exceed the stated dose.

  1. Take one tablet once daily, preferably before a meal.
  2. Swallow the tablet whole with a full glass of water — do not use fruit juice.
  3. Try to take it at the same time each day to maintain consistent symptom control.
  4. If you miss a dose, take it as soon as you remember — unless it is nearly time for your next dose. Never double up.
Indication Age Group Dose Frequency
Seasonal allergic rhinitis (hay fever) Adults & children 12+ 120mg (1 tablet) Once daily
Seasonal allergic rhinitis (hay fever) Under 12 years Not recommended

 

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

 

Like all medicines, fexofenadine 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
  • Nausea
  • Dizziness
  • Drowsiness (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, some people may experience a hypersensitivity reaction, including skin rash, itching, or swelling of the face, lips, or throat. If this happens, stop taking the tablet immediately and seek urgent medical attention. If you experience any side effects not listed here, speak to your pharmacist or GP. You can also report side effects directly to the MHRA via the Yellow Card scheme at yellowcard.mhra.gov.uk.

If you're managing multiple allergy symptoms, you might also find it useful to explore our ear, nose and throat range for additional nasal or throat symptom relief.

 

How Should You Store Treathay Fexofenadine 120mg?

 

  • Store below 25°C in a dry place, away from direct heat and sunlight.
  • Keep the tablets in their original packaging until use.
  • Keep 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 local pharmacy for safe disposal.

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 online in the UK?

You can buy Treathay Fexofenadine 120mg tablets directly from Cured Pharmacy, a GPhC-registered UK online pharmacy. No prescription is needed — it is available as an over-the-counter Pharmacy (P) medicine for adults and children aged 12 and over. You can also browse our full allergy and hay fever collection for related products.

How does fexofenadine 120mg work in the body?

Fexofenadine is a selective H1 antihistamine that works by blocking histamine receptors in the body, preventing the allergic response that causes sneezing, itching, and nasal congestion. Unlike first-generation antihistamines, it does not cross the blood-brain barrier significantly, so it is far less likely to cause drowsiness. It reaches peak effectiveness within one to three hours of taking a dose.

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

Take one 120mg tablet once daily, swallowed whole with a full glass of water — never with fruit juice, as this reduces absorption. It is best taken before a meal and at the same time each day for consistent symptom control. Do not take more than one tablet in 24 hours.

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

There is no strict requirement on timing, but many people find taking it in the morning before breakfast works well, as pollen counts tend to be highest in the morning and early evening. Taking it at the same time each day helps maintain steady levels in your system. Consistency matters more than the specific hour you choose.

Can I take fexofenadine 120mg every day during hay fever season?

Yes, fexofenadine 120mg is designed for daily use throughout the hay fever season and is well tolerated with continuous use. If your symptoms persist beyond the hay fever season or you need it year-round, speak to your GP to investigate whether you have perennial allergic rhinitis. Do not exceed the recommended once-daily dose.

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

The most commonly reported side effects include headache, nausea, and dizziness, which are usually mild and short-lived. Taking the tablet with food may help reduce nausea if it occurs. If you experience any severe or unusual symptoms — such as facial swelling, difficulty breathing, or a skin rash — stop taking the tablet and seek medical attention immediately.

Who is eligible to take fexofenadine 120mg tablets?

Fexofenadine 120mg is suitable for adults and children aged 12 years and over who are experiencing seasonal allergic rhinitis symptoms. It is not recommended for children under 12, or for people who are pregnant or breastfeeding without medical advice. Those with severe kidney problems should consult their GP before use.

What happens if I miss a dose of fexofenadine 120mg?

If you miss a dose, 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 and carry on as normal. Never take two tablets at once to compensate for a missed dose. Missing an occasional dose is unlikely to cause your symptoms to return immediately.

How does fexofenadine 120mg compare to cetirizine for hay fever?

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 option for people who drive or need to stay alert. Cetirizine is licensed for use from age 6, whereas fexofenadine 120mg is for those aged 12 and over. The best choice depends on your individual response and circumstances.

Can I drink alcohol while taking fexofenadine 120mg?

Fexofenadine is not known to interact significantly with alcohol in the way that older antihistamines do, but caution is still advisable. Alcohol can independently cause drowsiness, and combining it with any medicine is generally not recommended. If you are unsure, speak to your pharmacist before drinking alcohol whilst taking this tablet.

Is fexofenadine 120mg safe during pregnancy or breastfeeding?

Fexofenadine is not recommended during pregnancy or breastfeeding unless specifically advised by a doctor, as there is limited safety data available for these groups. If you are pregnant, planning to become pregnant, or breastfeeding, always consult your GP or midwife before taking any antihistamine. There may be safer alternatives your doctor can recommend.

Can fexofenadine 120mg be taken with other hay fever medicines?

Fexofenadine can sometimes be used alongside nasal corticosteroid sprays for more complete hay fever symptom control, but you should not take it with another antihistamine at the same time. Always check with your pharmacist before combining medicines. If you also suffer from itchy or watery eyes, our eye care range includes antihistamine eye drops that may complement this tablet.

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

Fexofenadine is absorbed relatively quickly, with peak plasma concentrations typically reached within one to three hours of taking a dose. Most people notice a meaningful reduction in hay fever symptoms within a few hours of their first tablet. Taking it consistently each day helps maintain steady symptom control throughout the season.

How long can you stay on fexofenadine 120mg?

Fexofenadine 120mg can be used for the duration of the hay fever season, which in the UK typically runs from late March through to September depending on the pollen type you react to. If you find you need it beyond this period, or for more than the duration stated on the pack, speak to your GP. Long-term use should be reviewed by a healthcare professional.

What are the latest findings on fexofenadine for hay fever?

Fexofenadine remains one of the most widely studied second-generation antihistamines, with a well-established safety and efficacy profile supported by decades of clinical evidence. Current NHS guidance continues to recommend non-drowsy antihistamines like fexofenadine as a first-line treatment for hay fever symptoms. No significant new safety concerns have emerged in recent years, and it continues to be a trusted option for seasonal allergy management.

How Should You Use Treathay Fexofenadine 120mg?

Using this tablet correctly makes a real difference to how well it works. Fexofenadine is taken orally — swallowed whole, not chewed or crushed. Always use it exactly as described on the packaging or as directed by your pharmacist.

What Is the Correct Dose of Treathay Fexofenadine 120mg?

The dose for this product is straightforward — one tablet once daily. Do not take more than the recommended dose, even if your symptoms feel severe. If one tablet per day is not providing adequate relief, speak to your pharmacist or GP rather than increasing the dose yourself.

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

There is no single "correct" time, but many people find taking their tablet in the morning before breakfast works well — particularly because pollen counts in the UK tend to peak in the morning and again in the early evening. Taking it consistently at the same time each day helps maintain a steady level of the medicine in your system, which is what keeps your symptoms under control throughout the day.

If you find morning dosing difficult to remember, linking it to another daily habit — such as brushing your teeth — can help build a reliable routine.

How Long Can You Use Treathay Fexofenadine 120mg For?

This tablet can be used daily for the duration of the hay fever season, which in the UK typically runs from late March through to September, depending on which pollens trigger your symptoms. Grass pollen season, for example, usually peaks between May and July. If you find you need antihistamine treatment outside of the typical hay fever season, or for longer than the duration stated on the pack, it is worth speaking to your GP to explore whether you have perennial allergic rhinitis or another underlying condition.

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 very well tolerated, and most people who take it experience no side effects at all. However, as with any medicine, some people may notice mild reactions, particularly when first starting treatment.

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

These effects are usually mild and tend to resolve on their own without any need to stop treatment. Taking the tablet with a small amount of food may help if nausea is a concern.

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

Less commonly, some people may experience the following side effects. These affect fewer than 1 in 100 people and are generally not a cause for alarm unless they persist or worsen.

  • Fatigue or unusual tiredness
  • Dry mouth
  • Insomnia or difficulty sleeping
  • Nervousness or restlessness
  • Abdominal discomfort

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

Serious side effects are rare but can occur. A small number of people may experience a hypersensitivity (allergic) reaction to fexofenadine itself. Signs of a serious allergic reaction include skin rash or hives, swelling of the face, lips, tongue, or throat, difficulty breathing or swallowing, and a sudden drop in blood pressure causing faintness. If you notice any of these symptoms after taking this tablet, stop immediately and call 999 or go to your nearest A&E department. Do not take another dose.

What Should You Do If You Experience Side Effects of Treathay Fexofenadine 120mg?

For mild side effects such as headache or nausea, these often settle within a few days 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. You can also report any suspected side effects directly to the MHRA via the Yellow Card scheme at yellowcard.mhra.gov.uk. Reporting side effects helps improve medicine safety information for everyone.

Can Treathay Fexofenadine 120mg Interact With Other Medicines?

Yes, certain medicines and substances can affect how fexofenadine works in your body. Antacids containing aluminium or magnesium hydroxide can reduce the absorption of fexofenadine — leave at least two hours between taking these and your fexofenadine tablet. Fruit juices including grapefruit, orange, and apple juice can also significantly reduce absorption, so always take this tablet with water. Erythromycin (an antibiotic) and ketoconazole (an antifungal) may increase fexofenadine blood levels; if you are prescribed either of these, inform your pharmacist. Always tell your pharmacist or GP about all medicines, supplements, and herbal remedies you are currently 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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