General:
This herb consistsof the trunk bark of Eucommia ulmoides Oliv. (family Eucom-miaceae), which is mainly produced in Sichuan, Yunnan, Guizhou and Hubei provinces. It is sweet in flavour, warm in property, acting on the liver and kidney channels.

Function:
It is associated with the liver and kidneys, and is considered the primary herb used to increase yang functions in the body. Eucommia bark strengthens the bones and muscles, heals injured and weakened tissues, and can treat lower back and leg pain, stiffness and arthritis.

In addition to its healing effects, eucommia has the ability to lower blood pressure; it is also given to pregnant women to calm the fetus and prevent miscarriage.