Ask your doctor or pharmacist before using any other medicine, including over-the-counter medicines, vitamins, and herbal products.
There are many other drugs that can interact with propafenone. Make sure your doctor knows about all other medicines you are using, especially lidocaine, ritonavir (Norvir®), quinidine (Cardioquin®, Quinaglute®), or other heart medicine such as amiodarone, Lanoxin®, Cordarone®, or Cardizem®. Tell your doctor if you use a blood thinner such as Coumadin®, or a beta-blocker such as atenolol, metoprolol, propranolol, or Lopressor®, or Tenormin®.
Make sure your doctor knows if you use arsenic trioxide (Trisenox®), cisapride (Propulsid®), dofetilide (Tikosyn®), or Tagamet®. Tell your doctor if you use certain antibiotics such as erythromycin, levofloxacin, Avelox®, or Zagam®. Your doctor should know if you also use medicine for depression or mental illness, such as Effexor®, Elavil®, Haldol®, Norpramin®, Paxil®, Prozac®, Seroquel®, Compazine®, Geodon®, Mellaril®, Tofranil®, or Zoloft®.
Make sure your doctor knows if you are pregnant or breast feeding. Tell your doctor if you have kidney disease, liver disease, asthma, bronchitis, or emphysema. Tell your doctor if you have congestive heart failure, you have a pacemaker, you have had a recent heart attack, or you have a family history of "Long-QT" syndrome.
Do not stop using this medicine suddenly without asking your doctor. You may need to slowly decrease your dose before stopping it completely.
This medicine may make you dizzy or drowsy. Avoid driving, using machines, or doing anything else that could be dangerous if you are not alert.