Gou Ji (Chain Fern Rhizome)

Chinese Herb Actions

Chinese Herb Dosage

• What is the typical dosage of Gou Ji?

  6–12 g in decoction (some sources give up to 15 g). Separately, the fine golden hairs (jin mao) are used externally, pressed onto a bleeding wound, rather than taken internally at that dose.

  Source: standard materia medica ranges, cross-checked. Reference only — not a prescription.

Chinese Herb Contraindications & Cautions

• Are there cautions or contraindications for Gou Ji?

  Because Gou Ji is warm and drying, it is traditionally contraindicated where there is Kidney yin deficiency with heat signs — such as dark, scanty urine, a dry mouth, or heat from fluid depletion. Use it with care in these dryness/heat patterns.

  Source: standard materia medica cautions, cross-checked. Not medical advice.

Chinese Herb Toxicity & Overdose

• Low. No significant toxicity is reported for Cibotium rhizome at normal therapeutic doses. The loose golden hairs should not be swallowed — they are a topical hemostatic, not an oral ingredient.

  Source: materia medica consensus; no toxicity signal in the reviewed research.

Herb-Drug Interactions

• No well-established clinical herb–drug interactions are documented for Gou Ji (Cibotium). Modern data are preclinical, so no interaction has been characterized clinically. (Flagged for practitioner confirmation — absence of documented interactions is not proof of safety.)

Western / Biomedical Research

Chinese Herb Clinical Studies & Research

Provided as research context — a summary of published biomedical study, not a therapeutic or medical claim.

• Is there modern research on Cibotium barometz (Gou Ji)?

  Yes, and it centers on bone, joint, and muscle — but it is preclinical. Network-pharmacology and animal work found Cibotium water extract restrained cartilage degeneration and suppressed inflammatory MMP and COX-2 signaling in osteoarthritis models; its polysaccharides stimulated chondrocyte proliferation in vitro; and an ethanol extract protected against dexamethasone-induced muscle atrophy in cultured myotubes — findings that echo its traditional use for the sinews, bones, and joints. Human clinical evidence remains limited.

  Sources: PubMed 40848860 (Cibotium barometz comprehensive review, 2025); PubMed 35873632 (network pharmacology in osteoarthritis, 2022); PubMed 28358416 (polysaccharides & chondrocyte proliferation, 2017); PubMed 37834245 / PMC 10573348 (protection against muscle atrophy, 2023). Research context, not a therapeutic claim.

Chinese Herb Notes

• How is Gou Ji different from Du Zhong, Gu Sui Bu, and Sang Ji Sheng — and from Gou Qi Zi?

  Gou Ji is the back-and-knee tonic that also expels wind-damp, making it the pick when deficiency and wind-damp bi coincide. Its neighbors overlap but each leans a different way:

  • vs Du Zhong — both tonify Liver/Kidney and strengthen the back and knees; Du Zhong is the stronger back tonic and additionally calms a restless fetus, while Gou Ji adds the wind-damp-dispelling action Du Zhong lacks.
  • vs Gu Sui Bu — both tonify the Kidneys and strengthen the bones; Gu Sui Bu is favored for mending traumatic bone injury and for Kidney-deficiency tinnitus or loose teeth, whereas Gou Ji emphasizes wind-damp bi with a weak lower back.
  • vs Sang Ji Sheng — both treat bi with deficiency and weak back/knees; Sang Ji Sheng also nourishes the blood and calms the fetus, while Gou Ji is warmer and more directed at Kidney yang and wind-damp.
  • vs Gou Qi Zi — a name collision only: Gou Qi Zi is the sweet wolfberry fruit that nourishes Liver/Kidney yin and blood and brightens the eyes — a different herb with a different action.

  Common combinations: with Du Zhong and Niu Xi for Liver/Kidney-deficient low back and knee pain; within the Du Huo Ji Sheng Tang approach (with Du Huo, Sang Ji Sheng, Mu Gua) for chronic wind-damp bi with deficiency; with astringent Kidney herbs for frequent urination or discharge.

  Source: standard TCM materia medica (differentiation and combinations), cross-checked. Demand context: “gou ji” vs “gou ji zi/gou qi zi” is a recurring pinyin-collision search.