Rythmol SR (Propafenose Hydrochloride Extended Release Capsules) Patient Information: How Should I Take the Drug at RxList

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May 27, 2012

Rythmol SR

Abnormal Heart Rhythms (Heart Rhythm Disorders) »

How does the heart work?

The heart is a two stage electric pump whose job it is to circulate blood through the body. There is a group of cells that serve as an automatic pacemaker located in the atrium that generates an electrical current that spreads to the heart muscle cells to generate a coordinated squeeze, so that the pump can function.

The heart has four chambers, the right and left atria (singular= atrium) and the right and left ventricles. The right side of the heart pumps blood to the lungs while the left side pumps it to the rest of the body.

Blood from the body is collected in the right atrium and is pushed into the right ventricle with a small beat of the upper chamber of the heart. The right ventricle then pumps the blood to the lungs to pick up oxygen. They oxygen-rich blood returns to the left atrium where the small atrial beat pushes it to the left ventricle. The left ventricle is much thicker than the right because it needs t...

Read the Abnormal Heart Rhythms (Heart Rhythm Disorders) article »

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Rythmol SR Patient Information including How Should I Take

What should I discuss with my healthcare provider before taking propafenone (Rythmol SR)?

You should not use this medication if you are allergic to propafenone, or if you have:

untreated or uncontrolled congestive heart failure;
a heart condition called "sick sinus syndrome" or "AV block" (unless you have a pacemaker);
slow heartbeats or severely low blood pressure;
an electrolyte imbalance; or
a breathing disorder such as asthma.

If you have any of these other conditions, you may need a dose adjustment or special tests to safely take propafenone:

congestive heart failure;
liver disease;
kidney disease;
lupus;
arthritis;
myasthenia gravis; or
if you have had a heart attack within the past 2 years.

FDA pregnancy category C. It is not known whether propafenone is harmful to an unborn baby. Before taking this medication, tell your doctor if you are pregnant or plan to become pregnant during treatment.

Propafenone may pass into breast milk and could harm a nursing baby. Do not use this medication without telling your doctor if you are breast-feeding a baby.

How should I take propafenone (Rythmol SR)?

You will need to receive your first few doses of propafenone in a hospital setting in case the medication causes serious side effects. Your heart rate will be constantly monitored using an electrocardiograph or ECG (sometimes called an EKG). This machine measures electrical activity of the heart.

Take this medication exactly as prescribed by your doctor. Do not take it in larger amounts or for longer than recommended. Follow the directions on your prescription label.

Your doctor may occasionally change your dose to make sure you get the best results from this medication.

To be sure this medication is helping your condition, your blood may need to be tested on a regular basis. Do not miss any scheduled appointments.

Store propafenone at room temperature away from moisture, heat, and light.

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