Rythmol SR

What is propafenone?

• 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.

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

• 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 behavior; or
• seizure.

• dizziness;
• unusual or unpleasant taste in your mouth;
• nausea, vomiting;
• warmth, redness, or tingly feeling under your skin;
• constipation;
• headache;
• tired feeling;
• ringing in your ears;
• unusual dreams; or
• blurred vision.

• cimetidine (Tagamet),
• digoxin (digitalis, Lanoxin);
• ketoconazole (Nizoral);
• orlistat (alli, Xenical);
• quinidine (Quinaglute, Quinidex, Quin-Release);
• rifampin (Rifadin, Rifamate, Rimactane);
• a blood thinner such as warfarin (Coumadin);
• an antidepressant such as desipramine (Norpramin), fluoxetine (Prozac), imipramine (Tofranil), paroxetine (Paxil), sertraline (Zoloft), or venlafaxine (Effexor);
• HIV or AIDS medication such as ritonavir (Norvir) or saquinavir (Invirase);
• another heart rhythm medication such as amiodarone (Cordarone, Pacerone);
• medicine to treat psychiatric disorders, such as haloperidol (Haldol); or
• a beta-blocker such as atenolol (Tenormin), labetalol (Normodyne, Trandate), metoprolol (Lopressor, Toprol), propranolol (Inderal, InnoPran), sotalol (Betapace), timolol (Blocadren), and others.