1-EBIO (1-Ethyl-2-benzimidazolinone) is an activator of Ca2+ sensitive K+ channels wirh an EC50 of 136 μM for KCa3.1. 1-EBIO induces Cl- secretion, K+ conductance, membrane hyperpolarization, and afterhyperpolarisation currents. 1-EBIO reduces epileptiform activity, seizure incidence, and rescues cells from Ionomycin induced death.