Toad toxin has digitalis-like cardioactive effects that include bradycardia, varying degrees of atrioventricular block, ventricular tachycardia, ventricular fibrillation and sudden cardiac death. We report here on a 54-year-old man who had varying degrees of atrioventricular block and nonsustained ventricular tachycardia two hours after he ate a bowl of toad soup. (Korean Circulation J 2007;37:283-286)