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Hai Jin Sha海金沙

Lygodii Spora · Climbing Fern Spores

Herbs that Drain Dampness 利水渗湿药《嘉祐本草》

Overview

The fine, sand-like spores of the climbing fern — sweet, salty and cold, entering Bladder and Small Intestine. It is the specific for hot, gritty, painful urination: it clears damp-heat from the lower burner and is the classical first choice for stone-type strangury. Being a loose powder it must be bagged before decocting or it will float and pass through the strainer.

Nature & Flavor

Sweet, salty · Cold

Channels

Bladder · Small Intestine

Typical Dosage

6–15 g in decoction
海金沙Photography for this entry is on its way.

Actions

2 core actions

  • Clears damp-heat, frees painful urinationBurning, urgent, dribbling urination; stone, bloody and turbid types of strangury.
  • Promotes urination, reduces swellingDamp-heat edema with scanty, dark urine.

In Formulas

Formulas containing Hai Jin Sha

No published formula lists this herb yet — the library is growing.

Indications & Clinical Uses

  • Damp-heat painful urination: burning, urgency, gravel in the urine
    - Urinary stones
    - Damp-heat edema with scanty urination

Western Medical Keywords

Searchable condition terms

Urinary tract infectionKidney stonesCystitisEdema

Contraindications

Cautions

Cold and draining: unsuitable in Kidney-yin deficiency with frequent urination and in deficiency-type urinary complaints without heat, and not for prolonged high-dose use. It must be wrapped for decoction.

Contraindicated in pregnancy: Not a classical prohibition, but it drains strongly — in pregnancy only under practitioner supervision

For licensed practitioners’ reference only

References

  1. 《中华人民共和国药典》.
    2. Bensky, Clavey & Stöger. Chinese Herbal Medicine: Materia Medica, 3rd ed.
    3. 《中华本草》.

Professional reference notice. Entries are scholarly references for licensed TCM practitioners and students — not medical advice, and not a recommendation to self-prescribe. Chinese herbal formulas should be used under the guidance of a qualified practitioner. Content is an original editorial compilation by Cura x Cura, cross-checked against the cited references.