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I'll be glad to help as a Cardiologist.
Both propafenone and amiodarone help control arrhythmias such as atrial fibrillation or atrial tachycardia's.
Amiodarone has slightly better effect on controlling arrhythmias originating from the top chambers of the heart, but can be associated with long term side effects such as liver dysfunction,
however, 100mg dose of Amiodarone is a rather low dose.
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