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Sodium valproate for epilepsy

Epilim, Episenta

Clinical Author's Note (Michael Stewart) 03/04/2018: valproate medicines must not be taken during pregnancy unless there is no suitable alternative. MHRA and the European Medicines Agency have announced strengthened measures to further reduce the risk of exposure to valproate drugs during pregnancy. Any woman or girl of child-bearing potential who needs a valproate medicine must be enrolled on a pregnancy prevention programme. This will involve counselling on potential risks as well as ongoing pregnancy testing during treatment. Click on the link above for more information and speak with your doctor if you have any concerns.

Read the information leaflet from inside your pack.

Take sodium valproate regularly every day. Do not suddenly stop taking it as this can cause your symptoms to return.

If you develop tummy (abdominal) pain, sickness, yellowing of your skin or of the whites of your eyes (jaundice) or any unexplained bruising or bleeding, tell your doctor straightaway.

About sodium valproate

Typ av medicin

An antiepileptic medicine

Används för

Epilepsi

Även kallad

Dyzantil®; Epilim®; Episenta®; Epival®; Convulex® (as valproic acid)

Tillgänglig som

Tablets, crushable tablets, oral liquid medicine, modified-release tablets, modified-release capsules, and sachets

Sodium valproate is prescribed to treat epileptic disease and seizures. It can be taken both by adults and by children.

A seizure is a short episode of symptoms which is caused by a burst of abnormal electrical activity in the brain. Sodium valproate works by reducing these abnormal electrical activities.

There is also a medicine with a similar name but which is used to treat a different condition. See the medicine leaflet called Valproat seminatrium för bipolär sjukdom for more information about this.

Before taking sodium valproate

Some medicines are not suitable for people with certain conditions, and sometimes a medicine may only be used if extra care is taken. For these reasons, before you start taking sodium valproate it is important that your doctor knows:

  • Om du är gravid, försöker bli gravid eller ammar.

  • If you or a close member of your family have liver problems.

  • Om du har några problem med hur dina njurar fungerar.

  • If you have an inflammatory condition called systemic lupus erythematosus (also called lupus or SLE).

  • Om du har en sällsynt ärftlig blodsjukdom som kallas porfyri.

  • If you have been told you have a mitochondrial disorder or a urea cycle disorder.

  • Om du tar några andra läkemedel. Detta inkluderar alla läkemedel du tar som finns att köpa utan recept, samt växtbaserade och komplementära läkemedel.

  • Om du någonsin har haft en allergisk reaktion mot en medicin.

How to take sodium valproate

  • Before you start the treatment, read the manufacturer's printed information leaflet from inside the pack. It will give you more information about sodium valproate and it will provide you with a full list of the side-effects which you may experience from taking it.

  • Take sodium valproate exactly as your doctor tells you to. It is usual to start treatment on a low dose, and then for the dose to be increased gradually to a regular maintenance dose. Most people take one or two doses daily. Doses for children are tailored to their age and weight.

  • Read the printed information with your supply for more details about how you should take your doses. For example, many brands of sodium valproate must be taken with or just after food. Some brands of tablets are crushable to make them easier to swallow. Others must be swallowed whole without crushing or chewing. The label on the pack and the printed information leaflet from inside will provide this sort of information for you. Alternatively, you can ask your pharmacist to advise you.

  • If you have been prescribed sachets (granules), you can swallow the granules by pouring them into your mouth and swallowing them with a drink of water. If you prefer, you can sprinkle the granules on to some soft food (yoghurt or ice cream, for example) or into a cool drink. Do not chew the granules.

  • Try to get into a habit of taking sodium valproate at the same time(s) each day. This will help you avoid missing doses.

  • If you do forget to take a dose, take it as soon as you remember unless it is nearly time for your next dose, in which case leave out the missed dose. Do not take two doses together to make up for a forgotten dose.

Få ut det mesta av din behandling

  • När du påbörjar en ny behandling mot epilepsi kan antalet eller typen av anfall förändras. Din läkare kommer att ge dig råd om detta.

  • Try to keep your regular appointments with your doctor. This is so your doctor can check on your progress. You will need to have blood tests before you start the medicine and while you are taking it.

  • There are several brands of sodium valproate available and your treatment could be affected by switching between brands made by different manufacturers. Each time you collect a new supply from your pharmacy, check to see if it looks the same as you have had before. If it is different, please discuss this with your pharmacist who will advise you.

  • You need to take sodium valproate every day. Stopping treatment suddenly can cause problems. If it becomes necessary for the treatment to stop, your doctor will want you to reduce your dose over a few days.

  • Sodium valproate can harm an unborn child so you måste avoid getting pregnant while you are taking sodium valproate. Make sure you have discussed with your doctor which types of contraception are suitable for you and your partner. If you are a woman and want to have a family, discuss this with your doctor so that you can be given advice from a specialist about alternative treatment innan you become pregnant.

  • People with epilepsy must stop driving. Your doctor will advise you about when it may be possible for you to start driving again. This will usually be after a year free of seizures.

  • Under behandlingen av epilepsi finns det en liten risk för att du kan få humörförändringar, plågsamma tankar och självmordstankar. Om detta händer måste du omedelbart berätta det för din läkare.

  • If you buy any medicines, always check with a pharmacist that they are suitable to take with your other medicines. Medicines which contain aspirin (such as some cold or flu remedies and painkillers) can interfere with sodium valproate.

Can sodium valproate cause problems?

Along with their useful effects, most medicines can cause unwanted side-effects although not everyone experiences them. The table below contains some of the most common ones associated with sodium valproate. You will find a full list in the manufacturer's information leaflet supplied with your medicine. The unwanted effects often improve as your body adjusts to the new medicine, but speak with your doctor or pharmacist if any of the following continue or become troublesome.

Very common

sodium valproate side-effects (these affect more than 1 in 10 people)

Vad kan jag göra om jag upplever detta?

Feeling sick (nausea), stomach pain

Håll dig till enkel mat - undvik rika eller kryddiga måltider

Feeling shaky

Om det är besvärligt, prata med din läkare

Vanlig

sodium valproate side-effects (these affect fewer than 1 in 10 people)

Vad kan jag göra om jag upplever detta?

Håravfall

This is usually temporary and the hair regrows (although it may be curlier than before)

Huvudvärk

Drick mycket vatten och be din apotekare rekommendera en lämplig smärtstillande. Om huvudvärken fortsätter, informera din läkare

Diarré

Drick mycket vatten för att ersätta förlorade vätskor

Känner dig sömnig

Kör inte och använd inte verktyg eller maskiner. Drick inte alkohol

Increased weight

Try to eat a well-balanced diet and take regular exercise

Uncontrolled muscle movements, lack of concentration, allergic reactions, problems with hearing

Let your doctor know about any of these

Problems with your liver, changes to some blood test results

Your doctor will routinely check for these

Viktigt: sodium valproate has been associated with a number of serious unwanted effects affecting the blood, pancreas and liver. Although these occur less commonly than some of the side-effects listed above, you must let your doctor know omedelbart if you notice any of the following:

  • An unexplained cough or sore throat, or any unusual bleeding or bruising.

  • Extreme tiredness, tummy (abdominal) pain, sickness (nausea and vomiting), dark urine or yellowing of your skin or of the whites of your eyes (jaundice).

How to store sodium valproate

  • Förvara alla läkemedel utom räckhåll och synhåll för barn.

  • Förvara på en sval, torr plats, borta från direkt värme och ljus.

Viktig information om alla läkemedel

Viktig information om alla läkemedel

Ta aldrig mer än den föreskrivna dosen. Om du misstänker att du eller någon annan kan ha tagit en överdos av denna medicin, gå till akutmottagningen på ditt lokala sjukhus. Ta med behållaren, även om den är tom.

Denna medicin är för dig. Ge den aldrig till andra människor även om deras tillstånd verkar vara detsamma som ditt.

Om du ska genomgå en operation eller tandbehandling, informera den som utför behandlingen om vilka mediciner du tar.

Behåll inte föråldrade eller oönskade mediciner. Ta dem till ditt lokala apotek som kommer att ta hand om dem åt dig.

Om du har några frågor om denna medicin, fråga din apotekare.

Rapportera biverkningar av ett läkemedel eller vaccin

Om du upplever biverkningar kan du rapportera dem online via Yellow Card webbplats.

Vanliga frågor

What is the difference between sodium valproate and Valproate semisodium?

Sodium valproate is prescribed to treat epileptic disease and seizures. Valproate semisodium is a similar-sounding medicine used for a different condition, specifically bipolar disorder.

What should I do if my doctor changes the brand of sodium valproate I am taking?

There are several brands of sodium valproate available. Your treatment could be affected by switching between brands made by different manufacturers. Each time you collect a new supply from your pharmacy, check to see if it looks the same as you have had before. If it is different, discuss this with your pharmacist, who will advise you.

If I am feeling sleepy while taking sodium valproate, can I still drive or use machinery?

No, if you are feeling sleepy as a side-effect of sodium valproate, you should not drive or use tools or machines. You should also avoid drinking alcohol.

What should I do if I experience unusual bleeding, bruising, or severe tiredness while taking sodium valproate?

Sodium valproate has been associated with some serious unwanted effects affecting the blood, pancreas, and liver. If you notice an unexplained cough or sore throat, or any unusual bleeding or bruising, extreme tiredness, tummy pain, sickness, dark urine, or yellowing of your skin or eyes, you must tell your doctor straightaway.

Can I take aspirin-containing medicines for pain relief while on sodium valproate?

No, medicines which contain aspirin, such as some cold or flu remedies and painkillers, can interfere with sodium valproate. Always check with a pharmacist if any over-the-counter medicine is suitable to take with your prescribed medication.

Vidare läsning och referenser

Artikelhistorik

Informationen på denna sida är skriven och granskad av kvalificerade kliniker.
  • Nästa granskning: 4 okt 2026
  • 5 okt 2023 | Senaste versionen

    Senast uppdaterad av

    Michael Stewart, MRPharmS

    Granskad av

    Sid Dajani

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