NCIt definition : An orally bioavailable benzofuran derivative, with anti-arrhythmic activity. Upon
oral administration, and although the exact mechanism of action through which dronedarone
exerts its anti-arrhythmic effect has not been fully elucidated, it inhibits multiple
voltage-gated ion channels, including sodium, potassium, and calcium ion channels,
and restores the normal sinus rhythm and reduces heart rate in atrial fibrillation.
It also non-competitively antagonizes adrenergic receptors.;