硝苯地平（英语：Nifedipine） ，商品名拜新同，是一种二氢吡啶类钙离子信道阻滞剂，主要阻断L-型钙离子信道。硝苯地平主要用来治疗心绞痛（尤其是变异型心绞痛）和高血压。硝苯地平被列入了世界卫生组织基本药物标准清单，是最重要的基本健康药物之一

Nifedipine, sold under the brand names Adalat among others, is a medication used to manage angina, high blood pressure, Raynaud's phenomenon, and premature labor. It is one of the treatments of choice for Prinzmetal angina. It may be used to treat severe high blood pressure in pregnancy. Its use in preterm labor may allow more time for steroids to improve the baby's lungs and time to transfer the mother to a well qualified medical facility before delivery. Nifedipine is taken by mouth and comes in fast and slow release formulations.