蛇床属（学名：Cnidium）是伞形科下的一个属，为一年生至多年生草本植物。该属共有约20种，分布于欧洲、亚洲和南非。

Cnidium is a genus of flowering plant in the Apiaceae, native to Eurasia, Africa and North America. It has 4 or 5 species. Cnidium monnieri (L.) Cuss. is one of the most widely used traditional herbal medicines and its fruits have been used to treat a variety of diseases in China, Vietnam, and Japan. As of this writing, 350 compounds have been isolated and identified from C. monnieri, including the main active constituent, coumarins. In vitro and in vivo studies suggest that osthole and other coumarin compounds possess wide range of pharmacological properties for the treatment of female genitals, male impotence, frigidity, skin-related diseases, and exhibit strong antipruritic, anti-allergic, antidermatophytic, antibacterial, antifungal, anti-osteoporotic effects. Although coumarins have been identified as the main active constituents responsible for the observed pharmacological effects, the molecular mechanisms of their actions are still unknown.