Yu Li Ren (郁李仁; Yù Lǐ Rén; Latin: Pruni Semen; English: bush cherry seed) in the current pharmacopoeia is the dried ripe seed of Prunus humilis, Prunus japonica, or the long-stalk almond of the Rosaceae family — small oval seeds, yellow-white to light brown, oily inside — harvested in late summer to early autumn after the fruit ripens, with the flesh and shell removed and the seed sun-dried, usually used raw, with a stir-fried version also on the market. It is neutral, acrid, bitter, and sweet, enters the Spleen, Large Intestine, and Small Intestine channels, and its core actions are to moisten the intestines and free the bowels, and to send qi down and promote water metabolism. It usually goes into decoctions, or is ground to a fine powder. The usual amount is 3–10 g. It needs no pre-decocting, late addition, or wrapped boiling — simmered in a small herb bag, or stirred into warm water as a powder. As a home cup, a small powder of it with a spoonful of honey suits a short, occasional dry-bowel spell.
It is not Huo Ma Ren. Huo Ma Ren (Hemp Seed) is warm and sweet, leaning to nourishing moistening for simple dry constipation with no water retention; this bush cherry seed is neutral, acrid, bitter, and sweet, descending and draining, and also promotes water. Spleen-stomach deficiency-cold, with loose stool and frequent diarrhea, is a poor match. Use caution in pregnancy and breastfeeding. Long-term edema from kidney deficiency, or qi-sinking prolapse, needs a clinic first. Persistent abdominal pain or vomiting after use needs a clinic first. Anyone allergic to Rosaceae plants should skip it. Do not keep taking it daily for more than about a week.
It is used most often for three patterns:
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Fluid-depletion dry intestines — dry hard stools, difficult passage, dry mouth and throat, mild bloating
- Damp-water stagnation — limb edema, abdominal fullness, scanty urine, thick greasy tongue coat
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Constipation with qi stagnation — bowel blockage with chest stuffiness and a faint cough
Acrid, bitter, sweet, and neutral, it is not a daily “bowel lubricant” to keep taking. A draining herb with no dry stagnation present damages the spleen and brings loose stool.
When fluids fail to moisten the intestines, or damp-water stagnates with qi failing to descend, dry hard stools, edema, and scanty urine are common. Yu Li Ren is neutral, acrid, bitter, and sweet. It moistens the intestines, descends qi, and promotes water, which is why it appears in Wu Ren Wan (Five Seeds Pill)–type formulas. It drains more than it tonifies. A deficiency-cold spleen and stomach, with loose stool and no stagnation, get worse if more is added.
Yu Li Ren is not a catch-all daily bowel lubricant. In spleen-stomach deficiency-cold, with loose stool, or in pregnancy, taking it alone is a poor match. Raw or stir-fried, and whether it belongs in a formula, should be decided by a licensed Chinese medicine practitioner after pattern diagnosis.