The actual sketch is intriguing and controversial, since mechanisms altering the physiological role of BK channels leading to either a loss- or gain-of-function have both been linked to seizure onset. Not many studies have been performed to unravel the efficacy of drugs acting on these channels as potential antiepileptics; however, paradoxically, efficacy has been demonstrated for both BK channel openers and blockers. Furthermore, their potential usefulness in preventing epileptogenesis has not been investigated at all. Substantial data on risks and benefits of modulating these channels are urgently needed to draw a definitive conclusion on whether BK channels are a viable future target for the treatment of epilepsy.