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Disopyramide for irregular heartbeats

Rythmodan

Disopyramide is used to treat irregular heartbeats. Your treatment will be started by a heart specialist.

It may make you feel dizzy or light-headed at first. Other side-effects include dry mouth and blurred vision.

If you also have diabetes, you may need to check your blood sugar (glucose) more regularly.

At a glance

  • Disopyramide is a medicine used to treat irregular heartbeats (arrhythmias).

  • It helps restore a normal heart rhythm and can prevent unusual heartbeats after a heart attack.

  • Take capsules or tablets with water, not opening capsules or chewing tablets.

  • Do not drive or use machines if you feel dizzy, weak, or have blurred vision.

  • If you have diabetes, you might need to check your blood sugar more frequently.

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About disopyramide

Typ av medicin

An antiarrhythmic medicine

Används för

Irregular heartbeats

Även kallad

Rythmodan®

Tillgänglig som

Capsules and modified-release tablets

Disopyramide is used to treat arrhythmias. An arrhythmia is an irregularity in your heartbeat, which causes your heart to skip a beat, beat unevenly, or beat very fast or very slowly.

Disopyramide restores your normal heart rhythm by controlling the irregular heartbeats. It can also help stop unusual heartbeats from occurring after a heart attack.

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 disopyramide it is important that your doctor knows:

  • If you have heart failure, or any heart problems other than your abnormal heart rhythm.

  • If you have an eye condition called glaucoma.

  • If you have any problems with your liver, kidneys, or prostate gland.

  • Om du har ett tillstånd som orsakar muskelsvaghet, kallat myasthenia gravis.

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

  • If you have a rare inherited blood condition called porphyria.

  • Om du tar eller använder 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.

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  • Before you start this treatment, read the manufacturer's printed information leaflet from inside your pack. The leaflet will give you more information about disopyramide and a full list of side-effects which you may experience from taking it.

  • Take disopyramide exactly as your doctor has told you to. If you have been supplied with capsules, it is usual to take 300-800 mg divided into several doses over the course of a day (this can mean taking 1-2 capsules, three to four times daily). If you have been supplied with tablets, it is usual to take 1-1½ tablets, twice a day. Your doctor will tell you what the right dose is for you, and this will be printed on the label of your pack to remind you.

  • Swallow the capsules/tablets with a drink of water. Do not open the capsules, and do not chew or crush the tablets.

  • Try to take your doses around the same times of day, as this will help you to remember to take them. You can take disopyramide before or after meals.

  • 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.

  • Try to keep your regular appointments with your doctor. This is so your doctor can check on your progress. Your doctor will want you to have regular tests during this treatment to check your heart rhythm and blood pressure. You will also need to have regular blood tests.

  • Treatment with disopyramide is usually long-term unless you experience an adverse effect. Continue to take your doses unless your doctor tells you otherwise.

  • If you have diabetes you may need to check your blood sugar (glucose) more frequently, as disopyramide may affect the levels of sugar in your blood. Your doctor will advise you about this.

  • If you are having an operation or any medical treatment, remember to tell the person carrying out the treatment that you are taking disopyramide.

  • If you buy any medicines, check with a pharmacist that they are suitable for you to take alongside disopyramide.

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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 disopyramide. 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.

Common disopyramide side-effects


Vad kan jag göra om jag upplever detta?

Feeling dizzy, weak or tired; blurred vision

If this happens, do not drive and do not use tools or machines

Torr mun

Försök tugga sockerfritt tuggummi eller suga på sockerfria karameller

Feeling sick (nausea), loss of appetite, stomach upset

Stick to simple meals - avoid rich or spicy food

Difficulty passing urine

Let your doctor know if this becomes a problem

Om du upplever några andra symtom som du tror kan bero på denna medicin, tala med din läkare eller apotekare.

  • 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

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.

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 website.

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Vanliga frågor

What kind of irregular heartbeats can disopyramide treat?

Disopyramide is used to treat various irregularities in your heartbeat. This includes situations where your heart skips a beat, beats unevenly, or beats either very fast or very slowly.

How does disopyramide work to help my heart?

Disopyramide works by helping to restore your normal heart rhythm. It does this by controlling the irregular heartbeats. Additionally, it can be beneficial in preventing unusual heartbeats from occurring after someone has experienced a heart attack.

Can I take disopyramide at any specific time during the day, like with or without food?

You can take disopyramide either before or after your meals. It's more important to try and take your doses around the same times each day to help you remember them.

What should I do if I forget to take a dose of disopyramide?

If you forget to take a dose, you should take it as soon as you remember. However, if it's almost time for your next scheduled dose, then you should skip the missed dose entirely. Never take two doses together to try and make up for one you've forgotten.

How often will I need to see my doctor while taking disopyramide?

You should try to keep all your regular appointments with your doctor. They will want to monitor your progress, check your heart rhythm and blood pressure, and you will also need to have regular blood tests.

Are there any specific activities I should avoid if I experience side effects like dizziness or blurred vision?

Yes, if you experience dizziness, weakness, tiredness, or blurred vision as a side-effect, you should not drive. You should also avoid using tools or machinery during these times.

How long will I need to continue taking disopyramide?

Treatment with disopyramide is typically long-term. You should continue to take your doses regularly unless your doctor specifically tells you otherwise.

Vidare läsning och referenser

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About the authorView full bio

Author image

Michael Stewart, MRPharmS

Medicine Leaflet Review Manager – Contractor, Pharmacist

BPharm (Hons), MRPharmS

Michael is a community pharmacist practicing in the Midlands and South Yorkshire with more than 20 years’ experience advising on medicines and medical conditions. He has a strong background in healthcare training, having produced and delivered training courses for pharmacy teams and staff of residential care settings, including nurses. He has also contributed to pharmacy advisory boards for the management of low acuity conditions in the community.

About the reviewer

Author image

Sid Dajani

Sultan Dajani qualified at the London School of Pharmacy in 1994 and became the youngest elected member of the Royal Pharmaceutical Society council since its founding in 1842.

Artikelhistorik

Informationen på denna sida är skriven och granskad av kvalificerade kliniker.

  • Next review due: 28 Jun 2027
  • 29 Dec 2022 | Senaste versionen

    Senast uppdaterad av

    Michael Stewart, MRPharmS

    Granskad av

    Sid Dajani
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