Heart Home > Rythmol Overdose

It is possible and potentially dangerous to overdose on Rythmol (propafenone). The effects are usually most severe within the first three hours, so seek immediate medical treatment if you believe you have taken too much Rythmol. Possible effects include seizures, confusion, and a coma. A healthcare provider may "pump" the stomach, administer certain medications, or provide supportive care.

Can You Take Too Much Rythmol?

Rythmol® (propafenone) is a prescription antiarrhythmia medication used in people with certain abnormal heartbeats. As with most medications, it is possible to take too much Rythmol.
The specific effects of an overdose can vary, depending on a number of factors, including the Rythmol dosage and whether it was taken with any other medications or substances.

Effects of an Overdose

The symptoms of a Rythmol overdose are usually most severe within the first three hours. Possible symptoms may include:
  • Nausea
  • Vomiting
  • Blurred vision
  • Low blood pressure, which could cause dizziness
  • Tiredness
  • Slow heart rate (bradycardia)
  • Heart rhythm problems
  • Confusion
  • Numbness, tingling, or burning sensations of the skin
  • Seizure
  • Coma.

Treatment Options for a Rythmol Overdose

If the overdose was recent, a healthcare provider may administer activated charcoal or "pump the stomach" to help reduce the amount of the medication absorbed into the bloodstream.
Treatment for any type of overdose also usually involves supportive care, which consists of treating the symptoms that occur as a result. Supportive treatment options for an overdose with Rythmol may include:
  • Close monitoring of the heartbeat
  • Intravenous (IV) fluids
  • Medications to treat arrhythmias if they occur
  • Medications, such as diazepam (Valium®), to treat seizures if they occur.
It is important that you seek medical attention immediately if you believe that you or someone else may have taken too much of this medication.
Written by/reviewed by:
Last reviewed by: Kristi Monson, PharmD;
Last updated/reviewed:
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