Euryale Seed Classic Formulas … Natural Herb Library

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Tonifies the Spleen and stops diarrhea ... Qian Shi is used when loose stool, poor appetite, and chronic digestive weakness reflect deficiency rather than acute infection.
Tonifies the Kidneys and secures essence ... traditional use includes spermatorrhea, frequent urination, and lower-burner weakness with leakage.
Dries dampness and stops leukorrhea ... it belongs to the group of astringent tonics that both supplement and stabilize rather than merely binding.

Jin Suo Gu Jing Wan style pairings with Lian Zi and Sha Yuan Zi ... essence-securing logic for chronic lower-burner leakage.
Yi Huang Tang ... a classic leukorrhea formula in which Qian Shi helps dry dampness while supporting the Spleen.
Deficiency-diarrhea combinations with Shan Yao and Bai Zhu ... traditional approach when weak transformation leads to chronic loose stool.

Traditional references describe Qian Shi as sweet, astringent, and neutral, entering the Kidney and Spleen to tonify, secure, and check chronic leakage.
Its combination of tonifying and binding action is why it appears in both reproductive-tonic and diarrhea-stabilizing formulas.
The herb is most appropriate for deficiency with leakage, not for active damp-heat excess.