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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.

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About disopyramide

Tipo de medicamento

An antiarrhythmic medicine

Utilizado para

Latidos irregulares

También llamado

Rythmodan®

Disponible como

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.

Before taking disopyramide

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.

  • Si padece una enfermedad ocular llamada glaucoma.

  • Si tiene algún problema en el hígado, los riñones o la próstata.

  • Si padece una enfermedad que causa debilidad muscular, llamada miastenia gravis.

  • Si está embarazada, esperando un bebé o en período de lactancia.

  • Si padece una rara enfermedad hereditaria de la sangre llamada porfiria.

  • Si toma o utiliza otros medicamentos. Esto incluye cualquier medicamento que esté tomando y que pueda adquirirse sin receta, así como medicamentos a base de plantas y complementarios.

  • Si alguna vez ha tenido una reacción alérgica a un medicamento.

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How to take disopyramide

  • 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.

Aproveche al máximo su tratamiento

  • 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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Can disopyramide 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 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


¿Qué puedo hacer si me ocurre esto?

Feeling dizzy, weak or tired; blurred vision

Si esto ocurre, no conduzca ni utilice herramientas o máquinas.

Boca seca

Prueba a mascar chicle sin azúcar o chupar caramelos sin azúcar

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

Stick to simple meals - avoid rich or spicy food

Dificultad para orinar

Let your doctor know if this becomes a problem

Si experimenta cualquier otro síntoma que considere que puede deberse a este medicamento, consulte a su médico o farmacéutico.

How to store disopyramide

  • Mantenga todos los medicamentos fuera del alcance y de la vista de los niños.

  • Almacenar en un lugar fresco y seco, lejos del calor y la luz directos.

Información importante sobre todos los medicamentos

Información importante sobre todos los medicamentos

No tome nunca más de la dosis prescrita. Si sospecha que usted u otra persona ha tomado una sobredosis de este medicamento, acuda al servicio de urgencias de su hospital. Llévese el envase, aunque esté vacío.

Este medicamento es para usted. Nunca se lo dé a otras personas aunque su enfermedad parezca ser la misma que la suya.

No guarde medicamentos caducados o que no desee. Llévelos a su farmacia local, que se encargará de eliminarlos por usted.

Si tiene cualquier duda sobre este medicamento pregunte a su farmacéutico.

Informar de los efectos secundarios de un medicamento o vacuna

Si experimenta efectos secundarios, puede notificarlos en línea a través del sitio web de la Tarjeta Amarilla.

Lecturas complementarias y referencias

Historia del artículo

La información de esta página ha sido redactada y revisada por médicos cualificados.

  • Fecha límite de la próxima revisión: 28 dic 2025
  • 29 dic 2022 | Última versión

    Última actualización

    Michael Stewart, MRPharmS

    Revisado por expertos

    Sid Dajani
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