氟桂嗪是一种有效的 Na+/Ca2+ (T 型) 通道双重阻滞剂。氟桂嗪是 D2 多巴胺受体拮抗剂。氟桂嗪具有抗惊厥和抗偏头痛活性，以及外周血管扩张作用。 Flunarizine is a potent dual Na+/Ca2+ channel (T-type) blocker. Flunarizine is a D2 dopamine receptor antagonist. Flunarizine shows anticonvulsive and antimigraine activity, and peripheral vasodilator effects。