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Traditional part
Climbing Fern (Hai Jin Sha)
Lygodium japonicum
Traditional useGenerally low riskInteractions: ModeratePregnancy: Caution
Benefits summary
Fern spores used to clear heat and relieve painful, stony urination.
Traditional & historical use
Traditional use (tcm): Fern spores used to clear heat and relieve painful, stony urination.
Modern claims
Fern spores used to clear heat and relieve painful, stony urination.
How it may work
Active constituents are under study; evidence ranges from traditional use to preliminary human trials.
Benefit–risk at a glance
Potential benefits
- Fern spores used to clear heat and relieve painful, stony urination.
Most credible evidence
Evidence strength: traditional use.
Key uncertainties
- See the evidence level above
Known risks
- Short-term urinary use; limited data.
Who should avoid
- Pregnant/breastfeeding people without medical advice
Risks
Short-term urinary use; limited data.
Interactions
May interact with prescription medications — review with a clinician if you take any.
Special populations
Use caution in pregnancy, breastfeeding, for children, and with chronic disease unless cleared by a clinician.
Sourcing & growing
Choose reputable, tested suppliers; correct identification is essential for wild-harvested plants.
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