Shan Yao – Dioscorea opposita tuber – Chinese Yam – “Mountain Herb”

Nature: sweet, slightly astringent, neutral

Enters: Spleen, Lung, Kidney

Actions: Tonifies spleen, stomach, Lung, and kidney Qi and Yin; slightly controls body fluids; benefits both the Yin and the Yang of the Lungs and kidneys.

• Spleen Qi deficiency: poor appetite, loose stool, fatigue, spontaneous sweating.
• Lung Qi/Yin deficiency: cough, difficulty breathing.
• Kidney Qi deficiency: seminal emission, copious leukorrhea, frequent urination.
• Slowly lowers blood sugar.
• For diabetes (Lung, stomach, kidney Qi deficiency or Qi and Yin deficiency): up to 250g per day, decocted and taken as a tea.
• Powder and make into jook to build spleen Qi and appetite.
• Use raw to tonify the Yin, dry-fry to strengthen the spleen.
• In some damp patients, Shan yao’s astringent quality contraindicates its use.
Li: Useful for nasal dripping – astringes.
PLB: Recent studies indicate that orally consumed diosgenin is not converted to progesterone in the human body. Does not have hormonal effects.
Yoga: Aluka: V, P-; K+ (in excess)
• Nutritive tonic, aphrodisiac, rejuvenative, diuretic, antispasmodic, analgesic.
• For impotence, senility, hormonal deficiency, infertility, colic, nervous excitability, hysteria, abdominal pain, cramps.

Dose: 9-60g (up to 250g/day for wasting and thirsting disorder)

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