Yam acts calmly, tonifying but not stagnant, nourishing but not greasy, for the flat tonic San Jiao agent, usually does not cause the symptoms of fire.
Yam is the rhizome of Dioscoreaceae plant Dioscorea spp. It is flat in nature, sweet in flavor, and enters the lung, spleen and kidney meridians. It has the effect of nourishing the spleen and stomach, generating fluid and benefiting the lungs, and tonifying the kidney and astringent essence.
Yam can be used to treat spleen deficiency with little food, prolonged diarrhea, lung deficiency with asthma and cough, kidney deficiency with spermatorrhea, dyspareunia, frequent urination, and deficiency of heat and thirst. Bran-fried yam is used to tonify the spleen and strengthen the stomach, and is used for treating spleen deficiency with little food, diarrhea with loose stools, and excessive leucorrhea. The adverse effects and contraindications of this drug are not clear.
Yam is calm in nature and does not usually cause symptoms of fire. If there is a need for medication, it is recommended to use it under the guidance of a medical professional, rather than blindly using it on its own.