You doctor can work with you on finding the best drug for your case. What are the side effects to Toprol. Toprol XL is a long acting version of metoprolol. This drug is a beta-blocker. The atria remain in fibrillation but the side effect of the rapid heart rate is eliminated.
Chronic anticoagulation is required, as there is a risk of blood clots forming in the atria.
The links below are good sources of information about atrial fibrillation. Information provided in the heart forum is for general purposes only. Only your physician can provide specific diagnoses and therapies. Please feel free to write back with additional questions. The Heart Center website contains a directory of the cardiology staff that can be used to select the physician best suited to address your cardiac problem.