I must assume you have chronic (permanent) atrial fibrillation. This being the case, there is no magic medication, but here is a list of some of the currently available.
Amiodarone, also Class III I think, but the strongest in this group.
Sotalol (trade names Betapace)
TIKOSYN® (Dofetilide Capsules)
Antidysrhythmic (Class IC)
There are others, and some other brand names. All are by prescription only, and the Class III, and for some the Class IC, require hospitalization for a couple of days to start. They can have life threatening side-effects (such as ventricle fibrillation) which can be immediately addressed/stopped when in the hospital, intensive-care, I believe.
This site complies with the HONcode standard for trustworthy health information.
The Content on this Site is presented in a summary fashion, and is intended to be used for educational and entertainment purposes only. It is not intended to be and should not be interpreted as medical advice or a diagnosis of any health or fitness problem, condition or disease; or a recommendation for a specific test, doctor, care provider, procedure, treatment plan, product, or course of action. Med Help International, Inc. is not a medical or healthcare provider and your use of this Site does not create a doctor / patient relationship. We disclaim all responsibility for the professional qualifications and licensing of, and services provided by, any physician or other health providers posting on or otherwise referred to on this Site and/or any Third Party Site. Never disregard the medical advice of your physician or health professional, or delay in seeking such advice, because of something you read on this Site. We offer this Site AS IS and without any warranties. By using this Site you agree to the following Terms and Conditions. If you think you may have a medical emergency, call your physician or 911 immediately.