Lock yang has the effect of tonifying the kidney and assisting yang, moistening the intestines and relaxing the bowels. It is mainly used for treating kidney yang deficiency (deficiency of yang energy in the kidneys), impotence and coldness of essence. The dosage of its decoction is usually 5-15g. Lockyang, is the fleshy stem of Lockyang, family Lockyangidae. Clinically, it is mainly used to treat symptoms of kidney yang deficiency, impotence and coldness of essence, deficiency of liver and kidney (weakness of liver and kidney), impotence and weakness of foot and tendon, and constipation with dryness of intestines. It is not recommended to take lock yang for those with yin deficiency (deficiency of yin and essence in the body, resulting in hyperactivity of deficiency fire), spleen deficiency and diarrhea (diarrhea caused by weakness of the spleen), and constipation due to solid heat. Lock yang should not be combined with adrenocorticotropic hormone drugs, as it will aggravate the side effects of the hormone, such as high blood pressure and edema. If you need to use lock yang, it must be used under the guidance of a professional doctor.