Jiang Can (Body of Sick Silkworm)

Chinese Herb Actions

Chinese Herb Dosage

• What is the typical dosage of Jiang Can?

  3–9 g in decoction. As a powder (a common form for this substance), 1–1.5 g per dose. It is used both raw and dry-fried (chao), the fried form being gentler and often preferred for internal wind and phlegm patterns.

  Source: standard materia medica ranges (Bensky et al., 3rd ed.). Reference only — not a prescription.

Chinese Herb Contraindications & Cautions

• Are there cautions or contraindications for Jiang Can?

  Jiang Can is generally well tolerated, but it is not suited to wind arising from deficiency. It is traditionally used with caution — or avoided — where convulsions or spasms stem from blood or yin deficiency rather than wind-phlegm or wind-heat, and where there is no phlegm or heat sign to warrant it. Practitioner caution is also reasonable in those with known sensitivity to animal- or insect-derived materia medica, as occasional allergic reactions have been reported.

  Source: standard materia medica consensus (Bensky et al., 3rd ed.); the allergy note reflects reported case-level sensitivity and is flagged for practitioner confirmation.

Chinese Herb Toxicity & Overdose

• Low. Jiang Can is regarded as having low toxicity at customary doses. As with all animal- and insect-derived materia medica, clean sourcing, correct species identity, and proper processing are the practical safety considerations; a modern pharmacology review notes that its toxic constituents and quality control still warrant further study.

  Source: standard materia medica consensus; PubMed 29053625 / PMCID PMC 6151799 (review noting toxic constituents and quality control need further study). Sourcing note.

Herb-Drug Interactions

• No well-established clinical herb–drug interactions are documented. There is a theoretical, mechanism-based bleeding-risk caution: laboratory review reports anticoagulant activity for Bombyx batryticatus (see Research). On that basis, practitioner caution is reasonable alongside anticoagulant or antiplatelet drugs (e.g., warfarin, DOACs, aspirin, clopidogrel) or around surgery. This is a theoretical, mechanism-based caution, not an established clinical interaction. (Flagged for practitioner confirmation before publishing — 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 Jiang Can (Bombyx batryticatus)?

  Yes, but it is largely preclinical. Reported constituents include proteins and peptides, fatty acids, flavonoids, nucleosides, steroids, coumarin, and polysaccharides, and laboratory studies describe a broad range of activities that have not been established in humans.

  • Comprehensive review (2017). A review of traditional uses, chemistry, pharmacology, and toxicity records traditional use for convulsions, headaches, skin prurigo, scrofula, tonsillitis, and fever, and catalogues in vitro and animal effects on the nervous system plus anticoagulant, antitumor, antibacterial/antifungal, antioxidant, and hypoglycemic activities — while flagging that bioactive and toxic constituents and quality control need further study.
  • Cerebral ischemia model (preclinical, 2024). In rats with cerebral ischemia/reperfusion injury, a Bombyx batryticatus extract activated coagulation factor XII and promoted angiogenesis and neuronal recovery markers — an animal mechanistic study aligned with its traditional use in stroke, not a clinical result.
  • Immunomodulation (preclinical, 2021). A protein-rich extract matured dendritic cells and promoted a Th1 T-cell response in mice, suggesting a possible immune-adjuvant role in cancer immunotherapy; this is early laboratory work.

  Bottom line: modern interest centers on neuroactive, anticoagulant, and antitumor/immune signals, but the human clinical evidence base is thin. Not a basis for treatment claims.

  Sources: PubMed 29053625 / PMCID PMC 6151799 (traditional uses, chemistry & pharmacology review, 2017); PubMed 37633622 (factor-XII/angiogenesis, cerebral ischemia rats, 2024); PubMed 33477499 / PMCID PMC 7831066 (dendritic-cell/Th1 immunomodulation, mice, 2021). Research context, not a therapeutic claim.

Chinese Herb Notes

• How is Jiang Can different from the other wind-extinguishing herbs, and what is it combined with?

  Jiang Can is the milder, phlegm-transforming member of the “extinguish wind / stop tremors” group, so it is favored where internal wind is joined by phlegm, and where there is a wind-heat component affecting the head, throat, or skin. Unlike the toxic insect wind-herbs, it is low in toxicity and adds a distinct phlegm-and-nodule reach.

  How it compares within its category:

  • vs Quan Xie and Wu Gong — those are stronger, slightly toxic spasm-stoppers weighted toward severe wind, convulsions, and stubborn pain; Jiang Can is gentler, additionally transforms phlegm, dispels wind-heat, and treats the throat and skin.
  • vs Di Long — Di Long is cold and drains heat (best where wind arises from heat) and also calms wheezing; Jiang Can is neutral and works more on wind-phlegm and nodules.

  Common combinations: with Bai Fu Zi and Quan Xie in Qian Zheng San for wind-phlegm facial paralysis (deviation of the eye and mouth); with Quan Xie for convulsions and spasms; with wind-heat herbs such as Sang Ye, Jie Geng, and Bo He for wind-heat sore throat and hoarseness; and with Bei Mu, Xia Ku Cao, and Lian Qiao to soften and dissipate scrofula and phlegm nodules.

  Source: standard materia medica consensus (differentiation & classical combinations, Bensky et al., 3rd ed.).