When used as a kidney tonic, yam is usually decocted and taken internally, and can be used in combination with other kidney tonic drugs such as diaphragm and cornelian cherry.
Yam is the dried rhizome of the plant Dioscoreaceae, with the effect of tonifying the spleen, nourishing the stomach, generating fluid, benefiting the lungs, tonifying the kidneys and astringing the essence, and can be used for kidney deficiency caused by lumbar and knee soreness and weakness, fatigue (mental exhaustion, physical weakness), lack of breath and lazy speech (lack of strength, do not want to talk), spontaneous sweating (involuntary sweating in the daytime, sweating aggravates with a little movement), spermatorrhea, spermatogenesis, dyspepsia, dysuria, and urinary frequency.
Yam is a medicinal substance, and its main use as a medicine is to be taken internally in a decoction. It should be noted that this product should not be taken by those who are suffering from dampness and fullness in the middle of the body (too much dampness causing fullness and discomfort in the spleen and stomach), or those who have solid evils or accumulation of stagnation. Patients should choose the right medicine and correct usage under the guidance of professional physicians, and should not use the medicine blindly by themselves to avoid adverse consequences.