The efficacy of lock yang flush is to tonify the kidney and help Yang, laxative. However, the effect is limited and generally does not achieve the therapeutic effect. Lock yang, sweet in flavor and warm in nature; belongs to the liver, kidney and large intestine meridians. It is used for treating kidney yang deficiency (deficiency of yang energy in the kidneys), impotence and coldness of essence, insufficiency of the liver and kidneys (weakness of the liver and kidneys), impotence and weakness of the feet and tendons, and constipation due to dryness of the intestines and constipation. Note that it is contraindicated in cases of yin deficiency and fire (deficiency of yin essence in the body, resulting in hyperactive deficiency fire), spleen deficiency and diarrhea (diarrhea caused by weakness of the spleen), and constipation due to solid heat. The effective dose of lock yang water is limited, generally can not achieve the therapeutic effect, if you want to achieve the desired effect, it is recommended that under the guidance of a doctor for decoction or into the pill, loose use. If you feel unwell after drinking lock yang water, it is recommended that you stop using it and seek medical advice promptly.