Do not take this medicine with any of the following medications:

-arsenic trioxide
-certain antibiotics like clarithromycin, erythromycin, grepafloxacin, pentamidine, sparfloxacin, troleandomycin
-certain medicines for depression or mental illness like amoxapine, haloperidol, maprotiline, pimozide, sertindole, thioridazine, tricyclic antidepressants
-certain medicines for fungal infections like fluconazole, itraconazole, ketoconazole, posaconazole, voriconazole
-certain medicines for irregular heart beat like dronedarone
-certain medicines for malaria like chloroquine, halofantrine
-cisapride
-droperidol
-levomethadyl
-ranolazine

This medicine may also interact with the following medications:

-certain medicines for angina or blood pressure
-certain medicines for asthma or breathing difficulties like formoterol, salmeterol
-certain medicines that treat or prevent blood clots like warfarin
-cimetidine
-cyclosporine
-digoxin
-diuretics
-local anesthetics
-other medicines that prolong the QT interval (cause an abnormal heart rhythm) like dofetilide, ziprasidone
-rifampin
-ritonavir
-theophylline

They need to know if you have any of these conditions:
-heart disease
-high blood levels of potassium
-kidney disease
-liver disease
-low blood pressure
-lung disease like asthma, chronic bronchitis or emphysema
-pacemaker
-slow heart rate
-an unusual or allergic reaction to propafenone, other medicines, foods, dyes, or preservatives
-pregnant or trying to get pregnant
-breast-feeding

Your condition will be monitored closely when you first begin therapy. Often, this drug is first started in a hospital or other monitored health care setting. Once you are on maintenance therapy, visit your doctor or health care professional for regular checks on your progress. Because your condition and use of this medicine carry some risk, it is a good idea to carry an identification card, necklace or bracelet with details of your condition, medications, and doctor or health care professional.

You may get drowsy or dizzy. Do not drive, use machinery, or do anything that needs mental alertness until you know how this medicine affects you. Do not stand or sit up quickly, especially if you are an older patient. This reduces the risk of dizzy or fainting spells.

If you are going to have surgery, tell your doctor or health care professional that you are taking this medicine.

Keep out of the reach of children.

Store at room temperature between 15 and 30 degrees C (59 and 86 degrees F). Protect from light. Keep container tightly closed. Throw away any unused medicine after the expiration date.