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Allevia 120 mg tablets – patient leaflet, side effects, dosage

Text from the MHRA, as of · About this document

Medicine status: General sale (GSL) Details

Medicine strength:
120 mg
Contains active substance:

Patient leaflet - Allevia 120 mg tablets

1. What Allevia is and what it is used for

Allevia contains fexofenadine hydrochloride, which is a non-drowsy antihistamine.

Allevia is used in adults and adolescents over 12 years of age to relieve the symptoms of allergic rhinitis (for example hayfever) such as sneezing, itchy, runny or blocked nose and itchy, red and watery eyes.

2. What you need to know before you take Allevia

Do not take Allevia

if you are allergic to fexofenadine or any of the other ingredients of this medicine (listed in section 6)

Warnings and precautions

Talk to your doctor or pharmacist before taking Allevia if:

Vyou have problems with your liver or kidneys Vyou have or ever had heart disease, since this kind of medicine may lead to a fast or irregular heart beat

Vyou are elderly

If any of these apply to you, or if you are not sure, tell your doctor before taking Allevia.

Other medicines and Allevia

Tell your doctor or pharmacist if you are taking, have recently taken or might take any other medicines. If you are taking apalutamide (a medicine to treat prostate cancer), as the effect of fexofenadine may be decreased. Indigestion remedies containing aluminium and magnesium may affect the action of Allevia, by lowering the amount of medicinal product absorbed. It is recommended that you leave about 2 hours between the time that you take Allevia and your indigestion remedy.

Pregnancy and breast-feeding

Allevia should not be taken during pregnancy and whilst breast-feeding unless advised by a doctor.

Driving and using machines

Allevia is unlikely to affect your ability to drive or operate machinery. However, you should check that these tablets do not make you feel sleepy or dizzy before driving or operating machinery.

Allevia contains sodium

This medicine contains less than 1 mmol sodium (23 mg) per tablet, that is to say essentially ‘sodium-free’.

3. How to take Allevia

Always take this medicine exactly as described in this leaflet or as your doctor or pharmacist have told you. Check with your doctor or pharmacist if you are not sure.

For adults and children aged 12 years and over

The recommended dose is one tablet (120 mg) daily.

Take the tablet with water before a meal. This medicine starts to relieve your symptoms within 1 hour and lasts for 24 hours.

Allevia is not recommended for children under 12 years of age.

If you take more Allevia than you should

If you take too many tablets, contact your doctor or the nearest hospital emergency department immediately.

Symptoms of an overdose in adults are dizziness, drowsiness, fatigue and dry mouth.

If you forget to take Allevia

Do not take double dose to make up for a forgotten tablet. Take the next dose at the usual time.

If you have any further questions on the use of this medicine, ask your doctor or pharmacist.

  • 1 - R400635 120mg tablets

fexofenadine hydrochloride

Package leaflet: Information for the user (Referred to as Allevia in the remainder of the leaflet)

4. Possible side effects

Like all medicines, this medicine can cause side effects, although not everybody gets them. Tell your doctor immediately and stop taking Allevia if you experience:

y swelling of the face, lips, tongue or throat and difficulty breathing, as these may be signs of a serious allergic reaction.

The following undesirable effects have been reported in clinical trials, with an incidence similar to those observed in patients who did not receive the drug (placebo).

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

y drowsiness

y feeling sick (nausea)

y dizziness.

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

y tiredness/sleepiness.

Additional side effects (frequency not known: cannot be estimated from the available data) which may occur are:

y difficulty sleeping (insomnia)

y sleeping disorders

y bad dreams

y nervousness

y fast or irregular heart beat

y diarrhoea

y skin rash and itching

y hives

y serious allergic reactions which can cause swelling of the face, lips, tongue or throat, flushing, chest tightness, and difficulty breathing.

y blurred vision

Reporting of side effects

If you get any side effects, talk to your doctor, or pharmacist. This includes any possible side effects not listed in this leaflet.

You can also report side effects directly via the Yellow Card Scheme at: www.mhra.gov.uk/yellowcard or search for MHRA Yellow Card in the Google Play or Apple App Store. By reporting side effects you can help provide more information on the safety of this medicine.

5. How to store Allevia

Keep this medicine out of the sight and reach of children. Do not use this medicine after the expiry date which is stated on the carton after EXP. The expiry date refers to the last day of that month. This medicine does not require any special storage condition.

Do not throw away any medicines via wastewater or household waste. Ask your pharmacist how to throw away medicines you no longer use. These measures will help protect the environment.

6. Contents of the pack and other information

What Allevia contains

y The active substance is fexofenadine hydrochloride. Each tablet contains 120 mg of fexofenadine hydrochloride.

y The other ingredients are:

  • Tablet core: microcrystalline cellulose, pregelatinised maize starch, croscarmellose sodium, magnesium stearate.
  • Film coating: hypromellose, povidone K30, titanium dioxide (E171), colloidal anhydrous silica, macrogol 400, red iron oxide (E172) and yellow iron oxide (E172).

What Allevia looks like and contents of the pack

Allevia are peach coloured, capsule shaped tablets marked with “012” on one side and a scripted “e” on the other.

Allevia is presented in blister packs available in pack sizes of 7, 10, 15, 20, 30 tablets.

Not all pack sizes are marketed.

Marketing Authorisation Holder:

Opella

410 Thames Valley Park Drive

Reading

Berkshire

RG6 1PT

UK

Manufacturer:

Opella Healthcare International SAS

56, Route de Choisy

60200 Compiègne

France

This leaflet was last revised in June 2026.

For electronic version of this

leaflet scan the QR code. This

paper leaflet might not be the

latest version and thus

different to the electronic

leaflet which is the last updated

version available.

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About this document

Source: MHRA - Medicines and Healthcare products Regulatory Agency (products.mhra.gov.uk) · Marketing authorisation: PL 53886/0065

MHRA data as of 13 October 2026

Found a mistake? Tell us on the contact page.

The information on this site does not replace the advice of a doctor or pharmacist.

Facts about Allevia 120 mg tablets

Prescription needed? No, general sale list medicine (GSL) – also sold outside pharmacies
Active substance Fexofenadine
Strength 120 mg
Pharmaceutical form Oral tablet
Peach, modified capsule-shaped, film-coated tablet debossed with ‘012’ on one side and a scripted ‘e’ on the other side.
How is it taken Oral
Excipients Microcrystalline Cellulose, Pregelatinised Maize Starch, Croscarmellose Sodium, Magnesium Stearate, Hypromellose, Povidone, Titanium Dioxide (E171), Colloidal Anhydrous Silica, Macrogol 400, Iron oxide (E172)
Pack sizes 7 tablet, 15 tablet, 30 tablet
Is it available? Listed as available (NHS Dictionary of Medicines and Devices – not a record of current supplies)
Shelf life 3 years
Storage This medicinal product does not require any special storage conditions.
Drug group (ATC) Antihistamines for systemic use
  1. R Respiratory system drugs
    1. R06 Antihistamines for systemic use
      1. R06A Antihistamines for systemic use
        1. R06AX Other antihistamines for systemic use
          1. R06AX26 fexofenadine
Marketing authorisation PL 53886/0065
Marketing authorisation holder Opella Healthcare UK Limited, trading as Opella
Codes GTIN 5000283662204, 5000283662211, 5000283662716 · BNF 03040100

Sources: the MHRA product information (products.mhra.gov.uk) and the NHS Dictionary of Medicines and Devices (dm+d), release 10.2.0 of 19 October 2026, NHS Business Services Authority. Contains public sector information licensed under the Open Government Licence v3.0.