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Allevia Fexofenadine 120mg

Allevia Fexofenadine 120mg

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  • ✔️ Relieves sneezing, itching, and runny nose from hay fever
  • ✔️ Non-drowsy formula suitable for daytime use
  • ✔️ Once-daily 120mg dose for convenient symptom control
  • ✔️ Suitable for adults and adolescents aged 12 and over
  • ✔️ Targets H1 histamine receptors to block allergic reactions

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What Is Allevia Fexofenadine 120mg?

 

If hay fever leaves you sneezing through spring and summer, you are far from alone. Seasonal allergic rhinitis affects roughly one in five people in the UK, and finding a tablet that actually works without making you feel foggy is something many people struggle with. Allevia fexofenadine 120mg is a non-drowsy antihistamine tablet licensed for the relief of hay fever symptoms in adults and adolescents aged 12 and over. You can browse the full range of hay fever and allergy treatments in our allergy and hay fever collection.

Each tablet contains fexofenadine hydrochloride 120mg as the active ingredient. It is classified as a Pharmacy (P) medicine in the UK, meaning you can buy it without a prescription but it should be purchased from a registered pharmacy. Allevia is one of the most widely recognised branded versions of fexofenadine available over the counter.

 

How Does Allevia Fexofenadine 120mg Work?

 

Fexofenadine belongs to a group of medicines called second-generation antihistamines. When your immune system encounters an allergen — pollen, for example — it triggers the release of histamine, a chemical that causes the familiar symptoms of hay fever. Fexofenadine works by selectively blocking peripheral H1 histamine receptors, preventing histamine from binding and setting off that chain reaction.

  • Allergen exposure triggers histamine release from mast cells
  • Histamine normally binds to H1 receptors, causing sneezing, itching, and nasal congestion
  • Fexofenadine competitively blocks these H1 receptors
  • Because it does not readily cross the blood-brain barrier, it causes significantly less sedation than older antihistamines such as chlorphenamine

The result is targeted symptom relief without the heavy, drowsy feeling that puts many people off taking antihistamines during the working day.

 

Who Should Use Allevia Fexofenadine 120mg?

 

This tablet is suitable for adults and young people aged 12 and over who experience seasonal allergic rhinitis — commonly known as hay fever. It is particularly well suited to those who need to stay alert at work, school, or while driving, since it is classed as non-drowsy at the recommended dose.

  • Adults and adolescents aged 12 and over with hay fever symptoms
  • People who have found older antihistamines too sedating
  • Those who need once-daily, convenient dosing
  • Individuals with sneezing, itchy eyes, runny nose, or nasal congestion caused by seasonal allergens

It is not suitable for children under 12, and you should speak to your doctor before using it if you have kidney problems, as fexofenadine is primarily excreted via the kidneys.

 

How Does Allevia Fexofenadine 120mg Compare to Other Antihistamines?

 

Feature Allevia Fexofenadine 120mg Cetirizine 10mg
Active ingredient Fexofenadine hydrochloride Cetirizine hydrochloride
Sedation risk Very low (non-drowsy) Low, but slightly higher than fexofenadine
Dosing frequency Once daily Once daily
Suitable age 12 years and over 6 years and over (varies by formulation)

 

Is Allevia Fexofenadine 120mg Safe to Store at Home?

 

Yes. Store Allevia tablets below 25°C in a dry place, away from direct sunlight. Keep them out of reach and sight of children. Do not use the tablets after the expiry date printed on the packaging. If you also experience itchy or watery eyes alongside your hay fever, you might find it helpful to explore our eye care collection for additional relief options.

As with all antihistamines, check the packaging before use and ensure the foil seal is intact. Fexofenadine 120mg tablets should be swallowed whole with water — not with fruit juice, which can reduce absorption.

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.

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

Specifications of Allevia Fexofenadine 120mg

 

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

 

Allevia Fexofenadine 120mg is a non-drowsy antihistamine tablet used to relieve the symptoms of seasonal allergic rhinitis — more commonly known as hay fever. It contains fexofenadine hydrochloride 120mg as its active ingredient and is taken once daily by adults and adolescents aged 12 and over. Hay fever symptoms it helps to relieve include sneezing, a runny or blocked nose, itchy eyes, and an itchy throat or palate. According to the NHS, hay fever is one of the most common allergic conditions in the UK, affecting up to one in five people at some point in their lives.

 

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

 

Before taking this medicine, read the following carefully. There are certain situations where fexofenadine may not be appropriate for you.

Do not take Allevia Fexofenadine 120mg if you:

  • Are allergic to fexofenadine hydrochloride or any other ingredient in the tablet
  • Are under 12 years of age
  • Are pregnant or breastfeeding, unless your doctor has advised it is safe
  • Have severe kidney impairment (consult your GP first)

Known drug interactions — tell your pharmacist if you are taking:

  • Antacids containing aluminium or magnesium hydroxide — take fexofenadine at least 2 hours before or after these
  • Erythromycin or ketoconazole — these may increase fexofenadine blood levels
  • Rifampicin — may reduce the effectiveness of fexofenadine

Avoid taking this tablet with grapefruit juice, orange juice, or apple juice, as these can significantly reduce how much fexofenadine your body absorbs. Always take it with a glass of water.

 

How Should You Use Allevia Fexofenadine 120mg?

 

Always use this medicine exactly as described in the patient information leaflet or as directed by your pharmacist. Do not exceed the stated dose.

  1. Take one 120mg tablet once daily
  2. Swallow the tablet whole with a full glass of water
  3. Do not take with fruit juice — water only
  4. Take at the same time each day for consistent symptom control
  5. If you are also taking an antacid, leave at least 2 hours between the two medicines
Indication Age Group Dose Frequency
Seasonal allergic rhinitis (hay fever) Adults & adolescents 12+ 120mg (1 tablet) Once daily
Children under 12 Under 12 years Not recommended

 

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

 

Like all medicines, fexofenadine can cause side effects, although not everyone gets them. Most side effects are mild and resolve on their own.

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

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

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

  • Insomnia
  • Nervousness
  • Dry mouth
  • Abdominal pain or indigestion

Serious allergic reactions to fexofenadine are rare. Stop taking the tablet and seek immediate medical attention if you develop difficulty breathing, swelling of the face, lips, tongue or throat, or a severe skin rash. If you experience persistent or troublesome side effects, speak to your pharmacist or GP. You can also find additional support products in our ear, nose and throat collection if nasal symptoms persist alongside your hay fever.

 

How Should You Store Allevia Fexofenadine 120mg?

 

  • Store below 25°C in a dry place
  • Keep away from direct sunlight and moisture
  • 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 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 Allevia Fexofenadine 120mg online in the UK?

You can buy Allevia Fexofenadine 120mg online from Cured Pharmacy, a UK GPhC-registered online pharmacy. It is available without a prescription as a Pharmacy (P) medicine. Simply add it to your basket and complete a short health questionnaire to confirm suitability.

How does fexofenadine 120mg work in the body?

Fexofenadine works by selectively blocking peripheral H1 histamine receptors, which stops histamine from triggering allergy symptoms such as sneezing, itching, and a runny nose. Unlike first-generation antihistamines, it does not readily cross the blood-brain barrier, making it far less likely to cause drowsiness. This makes it a practical choice for people who need to stay alert throughout the day.

How do I use Allevia Fexofenadine 120mg step by step?

Take one tablet once daily, swallowed whole with a full glass of water — never with fruit juice. Try to take it at the same time each day to maintain consistent levels in your system. If you are also taking an antacid, leave at least two hours between the two medicines.

What is the best time to take Allevia Fexofenadine 120mg?

There is no strict requirement on timing, but many people find taking it in the morning works well for daytime hay fever symptom control. Consistency matters more than the exact time — taking it at the same time each day helps maintain steady levels in your bloodstream. If your symptoms are worse in the morning, taking it the evening before may offer earlier relief.

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

Common side effects include headache, nausea, dizziness, and fatigue, though most people tolerate fexofenadine well. If you experience a headache, staying well hydrated and taking the tablet with food may help. Serious side effects such as allergic reactions are rare — stop taking the tablet and seek medical help immediately if you develop swelling of the face, lips, or throat.

Who is eligible to take Allevia Fexofenadine 120mg?

Allevia Fexofenadine 120mg is suitable for adults and adolescents aged 12 and over who have seasonal allergic rhinitis (hay fever). It is not recommended for children under 12, and people with kidney problems or who are pregnant or breastfeeding should speak to their GP before use. You can explore our full range of suitable treatments in the allergy and hay fever collection.

What happens if I miss a dose of Allevia 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 skip the missed one entirely. Never take two tablets at once to compensate for a missed dose. Simply continue with your usual once-daily routine.

Can I take fexofenadine 120mg with other medicines?

You should avoid taking fexofenadine at the same time as antacids containing aluminium or magnesium hydroxide, as these reduce absorption. Erythromycin and ketoconazole may increase fexofenadine blood levels, while rifampicin may reduce its effectiveness. Always tell your pharmacist about every medicine, supplement, or herbal remedy you are currently taking.

Is Allevia Fexofenadine 120mg the same as cetirizine or loratadine?

No — fexofenadine, cetirizine, and loratadine are all second-generation antihistamines but they have different active ingredients and slightly different side effect profiles. Fexofenadine is generally considered one of the least sedating options, making it particularly suitable for people who drive or operate machinery. Your pharmacist can help you decide which antihistamine is most appropriate for your individual needs.

Can I take Allevia Fexofenadine 120mg during pregnancy or while breastfeeding?

Fexofenadine is not recommended during pregnancy or breastfeeding unless a doctor has specifically advised it is safe for you. The NHS recommends speaking to your GP or midwife before taking any antihistamine if you are pregnant or nursing. There are alternative options your doctor may consider more appropriate during this time.

How long can I take Allevia Fexofenadine 120mg for?

Allevia Fexofenadine 120mg can be taken throughout the hay fever season, which in the UK typically runs from late March to September depending on the pollen type you react to. If your symptoms persist beyond the expected season or worsen, speak to your GP. Long-term use beyond the hay fever season should be discussed with a healthcare professional.

Does Allevia Fexofenadine 120mg cause drowsiness?

Fexofenadine is classified as a non-drowsy antihistamine because it does not readily cross the blood-brain barrier at the recommended dose. However, a small number of people may still experience mild drowsiness, so it is worth seeing how you respond before driving or operating heavy machinery for the first time. If drowsiness is a concern, speak to your pharmacist about your options.

Can I drink alcohol while taking Allevia Fexofenadine 120mg?

The NHS advises caution with alcohol when taking antihistamines, as alcohol can increase the risk of side effects such as dizziness and drowsiness. While fexofenadine has a lower sedation risk than older antihistamines, combining it with alcohol is still not recommended. It is best to avoid alcohol or keep consumption to a minimum during treatment.

What are the alternatives to Allevia Fexofenadine 120mg for hay fever?

Alternatives include other second-generation antihistamines such as cetirizine and loratadine, as well as nasal corticosteroid sprays like beclometasone for more persistent nasal symptoms. For itchy or watery eyes, antihistamine eye drops may provide additional targeted relief — you can find suitable options in our eye care collection. Your pharmacist can advise on the most suitable combination for your symptoms.

What does the latest research say about fexofenadine for hay fever?

Fexofenadine has been extensively studied and is well established as an effective, non-sedating antihistamine for seasonal allergic rhinitis. Clinical evidence consistently shows it relieves sneezing, nasal congestion, and itching with a favourable safety profile compared to first-generation antihistamines. It remains one of the most widely recommended options in UK clinical guidelines for hay fever management.

How Should You Use Allevia Fexofenadine 120mg?

Using Allevia correctly is straightforward, but there are a few important steps to follow to get the most from each dose. Always read the patient information leaflet supplied with your pack before starting treatment.

Follow these steps each time you take your tablet:

What Is the Correct Dose of Allevia Fexofenadine 120mg?

The dose is fixed for this formulation and should not be adjusted without medical advice. Taking more than the recommended amount will not improve symptom relief and may increase the risk of side effects.

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

Most people find taking their tablet in the morning works well, as it provides symptom cover throughout the day when pollen counts tend to be highest. That said, consistency matters more than the specific time — choose a time that fits your daily routine and stick to it.

If your hay fever symptoms are particularly bad first thing in the morning, you might find taking the tablet the evening before helps you wake up with better symptom control. Speak to your pharmacist if you are unsure about timing.

How Long Can You Use Allevia Fexofenadine 120mg For?

Allevia Fexofenadine 120mg can be used throughout 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 your symptoms persist beyond the expected season, worsen significantly, or do not respond to treatment after a few days, speak to your GP. Prolonged use outside of the hay fever season should always be discussed with a healthcare professional to rule out other causes of your symptoms.

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 Allevia Fexofenadine 120mg?

Most people who take Allevia Fexofenadine 120mg tolerate it well. However, like all medicines, it can cause side effects in some people. Common side effects — those that may affect up to 1 in 10 people — are generally mild and tend to resolve without any specific treatment.

  • Headache
  • Nausea
  • Dizziness
  • Fatigue or tiredness
  • Mild drowsiness (less common than with older antihistamines)

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

Less common side effects may affect up to 1 in 100 people. These are not experienced by most users but are worth being aware of, particularly if you notice any new or unusual symptoms after starting treatment.

  • Insomnia or difficulty sleeping
  • Nervousness or restlessness
  • Dry mouth
  • Abdominal discomfort or indigestion
  • Back pain

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

Serious side effects are rare but can occur. A severe allergic reaction (anaphylaxis) to fexofenadine is uncommon, but you should be aware of the warning signs. Stop taking the tablet immediately and call 999 or go to your nearest A&E if you experience any of the following:

  • Difficulty breathing or swallowing
  • Swelling of the face, lips, tongue, or throat
  • Severe skin rash, hives, or blistering
  • Rapid or irregular heartbeat

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

If you experience mild side effects that are manageable, you can usually continue taking the tablet and they will often settle within a few days. Staying well hydrated and taking the tablet with food may help reduce nausea or headache. If side effects persist, worsen, or concern you, stop taking the medicine and speak to your pharmacist or GP as soon as possible.

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 information for everyone.

Can Allevia Fexofenadine 120mg Interact With Other Medicines?

Yes, fexofenadine can interact with certain other medicines. Antacids containing aluminium or magnesium hydroxide can reduce the absorption of fexofenadine if taken at the same time — always leave at least two hours between them. Erythromycin and ketoconazole may increase fexofenadine levels in the blood, while rifampicin may reduce its effectiveness. Alcohol can also increase the risk of dizziness and drowsiness, even with a non-drowsy antihistamine, so it is best avoided during treatment.

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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