氨氯地平(Amlodipine 或 Amlodipine besylate、脉优锭(Norvasc、辉瑞公司商标名)及其它学名药、可与苯磺酸(besylate)、甲磺酸酯(mesylate)或马来酸(maleic acid)等制备成复方药)是一种作为抗高血压药和治疗心绞痛之二氢吡啶(DHP)类的"长效钙信道阻滞药(CCB)"。「像其他"钙信道阻滞剂"一样，氨氯地平的作用是通过松弛在动脉壁的平滑肌，降低总外周阻力(total peripheral resistance/TPR)从而降低血压；在心绞痛时，氨氯地平增加血液流向心肌」(尽管"DHP类钙信道阻滞剂"对动脉而言更具选择性、如比起心脏(心肌)的肌肉组织来看，像是"心肌钙信道"并无"二氢吡啶"类)。

Amlodipine (as besylate, mesylate or maleate) is a medication used to lower blood pressure and prevent chest pain. It belongs to a group of medications known as dihydropyridine-type calcium channel blockers. By widening of blood vessels it lowers blood pressure. In angina, amlodipine increases blood flow to the heart muscle to relieve pain due to angina.