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Rythmol SR
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Rythmol SR

Generic name:propafenoneproe-PAF-e-none ]
Brand names: Rythmol, Rythmol SR
Drug class:Group I antiarrhythmics

Medically reviewed by Drugs.com on Nov 3, 2021. Written by Cerner Multum.

What is Rythmol SR?

Rythmol SR is a Class IC anti-arrhythmic that affects the way your heart beats.

Rythmol SR is used in certain situations to prevent serious heart rhythm disorders.

Rythmol SR may also be used for purposes not listed in this medication guide.

Warnings

You should not use Rythmol SR if you have heart failure, Brugada syndrome, sick sinus syndrome, AV block (without a pacemaker), severe low blood pressure, very slow heartbeats, a severe electrolyte imbalance, shortness of breath, or if you recently had a heart attack.

Rythmol SR may cause a new or worsening heartbeat pattern. Call your doctor at once if you have fast or pounding heartbeats, fluttering in your chest, shortness of breath, and sudden dizziness.

Before taking this medicine

You should not use Rythmol SR if you are allergic to it, or if you have:

  • heart failure, or if you have recently had a heart attack;

  • a genetic heart condition called Brugada syndrome;

  • a serious heart condition such as "sick sinus syndrome" or "AV block" (unless you have a pacemaker);

  • severe low blood pressure, or history of slow heart beats that have caused you to faint;

  • a severe or uncontrolled electrolyte imbalance; or

  • wheezing or shortness of breath.

Tell your doctor if you have ever had:

  • a breathing disorder;

  • liver or kidney disease;

  • lupus;

  • myasthenia gravis; or

  • an abnormal blood test called Antinuclear Antibody Test or ANA.

Tell your doctor if you have a pacemaker or defibrillator. These devices may need to be re-programmed while you are taking Rythmol SR.

Tell your doctor if you are pregnant or breast-feeding.

Rythmol SR may affect fertility (ability to have children) in men. Talk with your doctor if you have concerns about this risk.

How should I take Rythmol SR?

Follow all directions on your prescription label and read all medication guides or instruction sheets. Your doctor may occasionally change your dose. Use the medicine exactly as directed.

You may take Rythmol SR with or without food.

You may have very low blood pressure while taking this medication. Call your doctor if you are sick wit...