Caffeine-related atrial fibrillation.

We present a case of caffeine-induced atrial fibrillation which spontaneously reverted to normal sinus rhythm. Caffeine is a methylxanthine alkaloid that can cause various supraventricular and ventricular arrhythmias. It is important to improve public awareness of the potential adverse effects of high consumption of caffeine-containing products as fatal and serious events can occur.