Lock-yang has the effects of tonifying the kidney and yang, laxative and laxative; Cortex Eucommiae has the effects of tonifying the liver and kidney, strengthening the tendons and bones, and tranquilizing the fetus. Lock yang, the main treatment for kidney yang deficiency (deficiency of yang qi in kidneys), impotence and coldness of essence, deficiency of liver and kidneys (weakness of liver and kidneys), impotence and weakness of feet and tendons, constipation with dryness of intestines and bowels. It is also contraindicated in cases of yin deficiency and fire (deficiency of yin essence in the body, resulting in hyperactive fire), spleen deficiency and diarrhea (diarrhea caused by weakness of the spleen), and constipation due to solid heat. Cortex Eucommiae, treating kidney deficiency with lumbago and all kinds of lumbago, restlessness of the fetus, habitual abortion. Caution is advised for those with yin deficiency and fire exuberance. If there is any discomfort, it is recommended to consult a doctor promptly. If you need to use medication, you should go through a doctor’s diagnosis and follow the doctor’s instructions for standardized treatment.