The correct way to make water with lock yang is to take appropriate amount of lock yang, then brew it with boiling water and drink it when the water temperature is suitable. Lock yang infusion has the effect of tonifying the kidney and assisting yang, moisturizing the intestines and laxatives, but the effect of infusion is limited and generally fails to achieve the therapeutic effect. Clinically, lock yang is mainly used for the treatment of kidney yang deficiency (lack of yang energy in the kidneys), deficiency of essence and blood, lumbar and knee impotence, impotence and slippery semen, intestinal dryness and constipation. It should be noted that lock yang is contraindicated in cases of yin deficiency (deficiency of yin and essence in the body, resulting in hyperactive fire), spleen deficiency and diarrhea (diarrhea caused by a weak spleen), and constipation due to solid heat. The effective dosage of lock yang infusion is limited, and generally cannot achieve a therapeutic effect. If you feel unwell after drinking lockyang infusion, it is recommended that you stop using it and seek medical attention promptly.