Product Description Eucommia is the primary plant-sourced herb in Chinese herbalism used to the Kidney Yang functions, in particular as it affects the lower part of the body and the skeletal structure. And although Eucommia is primarily known as a powerful Yang Jing tonic, it is also a strong Yin Essence (Yin Jing) nourishing herb. Because it provides both Yin and Yang, it is a superb herb for men and women alike and can be used by almost anybody to promote the functions of the endocrine system, to promote sexual functions, to enhance normal growth, to promote healing, to strengthen the physical structure and to strengthen resistance. Recent animal studies indicate that the alcohol extract of Eucommia Bark may be a potent human growth hormone secretagogue. Clinical studies have reportedly shown that Eucommia extract may be effective in lowering blood pressure. It is widely used now in the treatment of hypertension, a serious health hazard of urban living.