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Briviact® 100 mg film-coated tablets – patient leaflet, side effects, dosage

Last updated: · Text from the MHRA, as of · About this document

Medicine status: Prescription only (POM) Details

Medicine strength:
100 mg
Contains active substance:

Patient leaflet - Briviact 100 mg film-coated tablets

1. WHAT BRIVIACT IS AND WHAT IT IS USED FOR

What Briviact is

Briviact contains the active substance brivaracetam. It belongs to a group of medicines called ‘anti-epileptics’. These medicines are used to treat epilepsy.

What Briviact is used for

  • Briviact is used in adults, adolescents and children from 2 years of age.
  • It is used to treat a type of epilepsy that has partial seizures with or without a secondary generalisation.
  • Partial seizures are fits that start by only affecting one side of the brain. These partial seizures can spread and extend to larger areas on both sides of the brain – this is called a ‘secondary generalisation’.
  • You have been given this medicine to lower the number of fits (seizures) you have.
  • Briviact is used together with other medicines for epilepsy.

2. WHAT YOU NEED TO KNOW BEFORE YOU TAKE BRIVIACT

Do not take Briviact if:

  • you are allergic to brivaracetam, other similar chemical compounds as levetiracetam or piracetam or any of the other ingredients of this medicine (listed in section 6). If you are not sure, talk to your doctor or pharmacist before taking Briviact.
  • you have ever developed a severe skin rash or skin peeling, blistering and/or mouth sores after taking Briviact.

Serious skin reactions including Stevens- Johnson syndrome have been reported in association with Briviact treatment. Stop using Briviact and seek medical attention immediately if you notice any of the symptoms related to these serious skin reactions described in section 4.

Warnings and precautions

Talk to your doctor or pharmacist before taking Briviact if:

  • You have thoughts of harming or killing yourself. A small number of people being treated with anti-epileptic medicines such as Briviact have had thoughts of harming or killing themselves. If you have any of these thoughts at any time, contact your doctor immediately.
  • You have liver problems - your doctor may need to adjust your dose.

Children

Briviact is not recommended for use in children under 2 years of age.

Other medicines and Briviact

Tell your doctor or pharmacist if you are taking, have recently taken or might take any other medicines.

In particular, tell your doctor if you are taking any of the following medicines – this is because your doctor may need to adjust your Briviact dose:

  • Rifampicin - a medicine used to treat bacterial infections.

    • St John’s wort (also known as Hypericum perforatum) - a herbal medicine used to treat depression and anxiety as well as other conditions.

Briviact with alcohol

  • Combining this medicine with alcohol is not recommended.
  • If you drink alcohol while taking Briviact the negative effects of alcohol may be increased.

Pregnancy and breast-feeding

Fertile women should discuss the use of contraceptives with the doctor.

If you are pregnant or breast-feeding, think you may be pregnant or planning to have a baby, ask your doctor or pharmacist for advice before taking this medicine.

It is not recommended to take Briviact if you are pregnant, as the effects of Briviact on pregnancy and the unborn baby are not known.

It is not recommended to breast-feed your baby while taking Briviact, as Briviact passes into breast milk.

Do not stop treatment without talking to your doctor first. Stopping treatment could increase your seizures and harm your baby.

Driving and using machines

  • You may feel sleepy, dizzy or tired while taking Briviact.
  • These effects are more likely at the start of the treatment or after a dose increase.
  • Do not drive, cycle or use any tools or machines until you know how the medicine affects you.

Briviact contains lactose and sodium

Briviact film-coated tablets contain:

  • lactose (a type of sugar) - If you have been told by your doctor that you have an intolerance to some sugars, contact your doctor before taking this medicine.
  • sodium – This medicine contains less than 1 mmol sodium (23mg) per tablet, that is to say essentially ‘sodium free’.

3. HOW TO TAKE BRIVIACT

Always take this medicine exactly as your doctor has told you. Check with your doctor or pharmacist if you are not sure. Other form(s) of this medicine may be more suitable for certain patients e.g. children (if tablets can not be swallowed in whole, for example); ask your doctor or pharmacist.

You will take Briviact together with other medicines for epilepsy.

How much to take

Your doctor will work out the right daily dose for you. Take the daily dose in two equal divided doses, approximately 12 hours apart.

Adolescents and children weighing 50 kg or more, and adults

  • The recommended dose is from 25 mg to 100 mg taken twice a day. Your doctor may then decide to adjust your dose to find the best dose for you.

Adolescents and children weighing from 20 kg to less than 50 kg

  • The recommended dose is from 0.5 mg to 2 mg for each kg of bodyweight, taken twice a day. Your doctor may then decide to adjust your dose to find the best dose for you.

Children weighing from 10 kg to less than 20 kg

  • The recommended dose is from 0.5 mg to 2.5 mg for each kg of bodyweight, taken twice a day. Your child’s doctor may then decide to adjust your child’s dose to find the best dose for your child.

People with liver problems

If you have problems with your liver:

  • As an adolescent or child weighing 50 kg or more, or as an adult, the maximum dose you will take is 75 mg twice a day.
  • As an adolescent or child weighing from 20 kg to less than 50 kg, the maximum dose you will take is 1.5 mg for each kg of bodyweight twice a day.
  • As a child weighing from 10 kg to less than 20 kg, the maximum dose your child will take is 2 mg for each kg of bodyweight twice a day.

How to take Briviact tablets

  • Swallow the tablets whole with a glass of liquid.
  • The medicine may be taken with or without food.

How long to take Briviact for

Briviact is a long term treatment – keep taking Briviact until your doctor tells you to stop.

If you take more Briviact than you should

If you have taken more Briviact than you should, talk to your doctor. You may feel dizzy and sleepy.

You may also have any of the following symptoms: feeling sick, a feeling of ‘spinning’, problems of keeping your balance, anxiety, feeling very tired,

irritability, being aggressive, not being able to sleep, depression, thoughts or attempts of harming or killing yourself.

If you forget to take Briviact

  • If you miss a dose take it as soon as you remember.
  • Then take your next dose at the time you would normally take it.
  • Do not take a double dose to make up for a forgotten dose.
  • If you are not sure what to do, ask your doctor or pharmacist.

If you stop taking Briviact

  • Do not stop taking this medicine unless your doctor tells you to. This is because stopping treatment could increase the number of fits you have.
  • If your doctor asks you to stop taking this medicine they will lower your dose gradually. This helps to stop your fits coming back or getting worse

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

4. POSSIBLE SIDE EFFECTS

Like all medicines, this medicine can cause side effects, although not everybody gets them.

Very common: may affect more than 1 in 10 people

  • feeling sleepy or dizzy

Common: may affect up to 1 in 10 people

  • flu
  • feeling very tired (fatigue)
  • convulsion, a feeling of ‘spinning’ (vertigo)
  • feeling and being sick, constipation
  • depression, anxiety, not being able to sleep (insomnia), irritability
  • infections of the nose and throat (such as the ‘common cold’), cough
  • decreased appetite

Uncommon: may affect up to 1 in 100 people

  • allergic reactions
  • abnormal thinking and/or loss of touch with reality (psychotic disorder), being aggressive, nervous excitement (agitation)
  • thoughts or attempts of harming or killing yourself: tell your doctor straight away
  • a decrease in white blood cells (called ‘neutropenia’) - shown in blood tests

Not Known: frequency cannot be estimated from available data

  • a widespread rash with blisters and peeling skin, particularly around the mouth, nose, eyes and genitals (Stevens-Johnson syndrome)

Additional side effects in children

Common: may affect up to 1 in 10 people

  • restlessness and hyperactivity (psychomotor hyperactivity)

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:

Yellow Card Scheme

Website: 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 BRIVIACT

Keep out of the sight and reach of children.

Do not use this medicine after the expiry date which is stated on the carton and blister after EXP. The expiry date refers to the last day of that month.

This medicine does not require any special storage conditions.

If your medicine becomes discoloured or shows any signs of deterioration consult your pharmacist who will advise you what to do.

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 Briviact contains

  • The active substance is brivaracetam.

    Each film-coated tablet contains 100 mg brivaracetam.

  • The other ingredients are Croscarmellose sodium, lactose monohydrate, betadex, lactose anyhdrous, magnesium stearate, polyvinyl alcohol, titanium dioxide (E171), macrogol 3350, talc, iron oxide yellow (E172) and iron oxide black (E172).

What Briviact looks like, and the contents of the pack

Green-grey, oval, film-coated tablets, debossed with ‘u100’ on one side and plain on the reverse.

Briviact film-coated tablets are available in packs containing 56 tablets.

Manufactured by UCB Pharma S.A., Chemin du Foriest, B-1420 Briane-l’Alleud, Belgium. Procured from within the EU and repackaged in the UK by the Product Licence holder: CD Pharma Ltd, 4 Cairn Court, East Kilbride, G74 4NB.

Briviact® 100 mg film-coated tablets PL: 20492/0741

POM

Briviact is a registered trademark.

Blind or partially sighted? Is this leaflet hard to see or read?

Call 01355 204 448 to obtain a leaflet in a format suitable for you.

Date of preparation: 25th June 2025

About this document

Source: MHRA - Medicines and Healthcare products Regulatory Agency (products.mhra.gov.uk) · Marketing authorisation: PLPI 20492/0741

Last revision stated in the text: 25 June 2025 · 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 Briviact 100 mg film-coated tablets

Prescription needed? Yes, prescription-only medicine (POM)
Active substance Brivaracetam
Strength 100 mg
Pharmaceutical form Oral tablet
How is it taken Oral
Is it available? Listed as available (NHS Dictionary of Medicines and Devices – not a record of current supplies)
Drug group (ATC)
  1. N Nervous system drugs
    1. N03 Antiepileptics
      1. N03A Antiepileptics
        1. N03AX Other antiepileptics
          1. N03AX23 brivaracetam
Marketing authorisation PLPI 20492/0741
Codes BNF 04080100

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.