Traditional Chinese Medicine Healing Herbs(TCMHH)

Prescription for Clearing away Summer-heat by Expelling Pathogenic Heat

Yi Yuan San (益元散): Classic TCM Formula

Yiyuan San
By the TCMHH editorial team Not medically reviewed How we work Updated 6 Oct 2026
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Name

Yi Yuan San

Actions

Clear summer-heat and promote diuresis.

The Prescription of 益元散

The Effect of 益元散

Indications

Summer-heat and dampness, scanty dark urine, dysphoria, inclination to drinking due to thirst.

Dosage and administration

Decoct 6 g. It should be wrapped during decocting.

Contraindication

It is contraindicated to pregnant women.

Notes for 益元散

Origin

It is a mixture of Hua Shi, Gan Cao and Zhu Sha.

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Sources and further reading

We cite classical materia medica and modern reference works. This article is health education, not medical advice.

  • Shennong Bencao Jing (The Divine Farmer's Materia Medica), Han dynasty.
  • Bencao Gangmu (Compendium of Materia Medica), Li Shizhen, 1578.
  • Chinese Pharmacopoeia, current edition — identity, quality and safety monographs.
  • NCCIH and WHO reference material on traditional medicine safety.

Spotted an error or a better source? Tell us — corrections are logged on our editorial policy page.

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