home > drugs a-z list > rythmol (propafenone) drug center > rythmol (propafenone) drug

Recommended Topic Related To:

Rythmol

What are palpitations?

Palpitations are unpleasant sensations of irregular and/or forceful beating of the heart. Some persons with palpitations have no heart disease or abnormal heart rhythms and the reasons for their palpitations are unknown. In others, palpitations result from abnormal heart rhythms (arrhythmias).

  • Arrhythmias refer to heartbeats that are too slow, too rapid, irregular, or too early.
  • Rapid arrhythmias (greater than 100 beats per minute) are called tachycardias.
  • Slow arrhythmias (slower than 60 beats per minute) are called bradycardias.
  • Irregular heart rhythms are called fibrillations (as in atrial fibrillation).
  • When a single heartbeat occurs earlier than normal, it is called a premature contraction, and this can cause the sensation of a forceful heartbeat.
  • Abnormalities in the atria, the ventricles, and the elect...

Rythmol

font size

RYTHMOL®
(propafenone hydrochloride) Tablets

DRUG DESCRIPTION

RYTHMOL (propafenone hydrochloride) is an antiarrhythmic drug supplied in scored, film-coated tablets of 150, 225 and 300 mg for oral administration. Propafenone has some structural similarities to beta-blocking agents.

The structural formula of propafenone hydrochloride is given below:

RYTHMOL® (propafenone hydrochloride)  Structural Formula Illustration

Propafenone hydrochloride occurs as colorless crystals or white crystalline powder with a very bitter taste. It is slightly soluble in water (20°C), chloroform and ethanol. The following inactive ingredients are contained in the tablet: corn starch, hypromellose, magnesium stearate, polyethylene glycol, polysorbate, povidone, propylene glycol, sodium starch glycolate and titanium dioxide.

What are the possible side effects of propafenone (Rythmol, Rythmol SR)?

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Call your doctor at once if you have a serious side effect such as:

  • feeling short of breath, even with mild exertion;
  • swelling, rapid weight gain;
  • slow heart rate, weak pulse, fainting, slow breathing (breathing may stop);
  • pale skin, easy bruising or bleeding, unusual weakness;
  • confusion, unusual thoughts or...

Read All Potential Side Effects and See Pictures of Rythmol »

What are the precautions when taking propafenone (Rythmol)?

Before taking propafenone, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

Before using this medication, tell your doctor or pharmacist your medical history, especially of: breathing problems (such as asthma, chronic bronchitis, emphysema), kidney problems, liver problems, myasthenia gravis.

Propafenone may cause a condition that affects the heart rhythm (QT prolongation). QT prolongation can infrequently result in serious (rarely fatal) fast/irregular heartbeat and other symptoms (such as severe dizziness, fainting) that require immediate medical attention. The risk of QT prolongation...

Read All Potential Precautions of Rythmol »

Last reviewed on RxList: 8/14/2008
This monograph has been modified to include the generic and brand name in many instances.

Rythmol - User Reviews

Rythmol User Reviews

Now you can gain knowledge and insight about a drug treatment with Patient Discussions.

Here is a collection of user reviews for the medication Rythmol sorted by most helpful. Patient Discussions FAQs

Report Problems to the Food and Drug Administration

 

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.


Heart Health

Get the latest treatment options.