Gui Ban (Fresh Water Turtle Shell, Testudinis)

Chinese Herb Actions

Chinese Herb Dosage

• What is the typical dosage of Gui Ban, and how is it prepared?

  Roughly 15–30 g in decoction (some sources cite up to 45 g), crushed and typically pre-decocted before the other herbs are added — as a dense mineral-rich shell material, it needs longer cooking to extract its constituents, so it is standardly simmered first, separately from more delicate herbs.

  • In Da Bu Yin Wan (Great Tonify the Yin Pill) — the site’s own formula data lists Gui Ban at 18–22.5 g, prepared deep-fried, alongside Shu Di Huang, Zhi Mu, and Huang Bai, for Yin deficiency with deficiency-fire flaring upward.
  • In Da Ding Feng Zhu (Major Arrest Wind Pearl) — Gui Ban is combined with E Jiao, Bie Jia, Mu Li, and other Yin-nourishing, wind-extinguishing herbs for severe Yin deficiency with internal wind (tremor, spasm) in late-stage febrile disease.

  Note: Cited upper-dose figures vary (30–45 g) across sources; both appear in reputable materia medica references and likely reflect different clinical traditions rather than an error, so both are retained.

  Source: Sacred Lotus sources & references (formula data for Da Bu Yin Wan, Da Ding Feng Zhu); cross-referenced against multiple online sources; Bensky, Materia Medica (3rd ed.). Reference only — not a prescription.

Chinese Herb Contraindications & Cautions

• Are there cautions for Gui Ban, and what should buyers know about sourcing?

  Gui Ban is contraindicated in pregnancy and should be avoided in patients with Damp-Cold or deficiency-cold-type diarrhea — as a cold, Yin-nourishing animal substance it can aggravate cold-deficiency digestive patterns, and its Blood-moving/Yin-nourishing action is traditionally considered unsafe in pregnancy.

  • Pregnancy — avoid.
  • Damp-Cold or deficiency-cold with diarrhea — avoid; the herb’s cold, rich nature is unsuited to cold-deficiency digestive weakness.
  • Conservation and legality (neutral reference note) — Gui Ban is an animal-derived medicinal from a turtle species (Chinemys/Mauremys reevesii) assessed as Endangered on the IUCN Red List, with historical demand for traditional medicine documented as a driver of large-scale commercial turtle farming in China. International trade in many turtle and tortoise species is subject to CITES controls, and legality of import/sale varies by country; buyers and practitioners should confirm sourcing and local legal status rather than assume equivalence across products.

  Source: Sacred Lotus sources & references; cross-referenced against multiple online sources; Bensky, Materia Medica (3rd ed.); IUCN Red List species assessment. Conservation/legal notes are neutral reference facts, not usage instructions.

Chinese Herb Toxicity & Overdose

• Generally low toxicity, though allergic-type reactions have been reported. Documented adverse reactions include chest oppression, hot sensations over the entire body, and mild pruritus (itching) in sensitive individuals — consistent with an animal-protein-based material rather than a specific poison. As with other animal-derived medicinals, authenticity and species-correct sourcing (see notes above) matter for both safety and product integrity.

  Source: Sacred Lotus sources & references; cross-referenced against multiple online sources. Reference note, not a safety guarantee.

Herb-Drug Interactions

• No well-established clinical herb–drug interactions are documented for Gui Ban. Given its traditional Blood-cooling/Blood-moving use in bleeding and menstrual disorders, practitioner awareness is reasonable for patients on anticoagulant or hormonal therapy — this is precautionary, not a demonstrated clinical interaction. (Flagged for practitioner confirmation.)

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 Gui Ban (Plastrum Testudinis)?

  Yes — a substantial and growing preclinical literature, concentrated on bone health (osteoporosis), consistent with the traditional “strengthens bone” action. Multiple laboratory and animal studies report that Plastrum Testudinis extract can inhibit osteoclast (bone-resorbing cell) activity and support bone-forming pathways.

  • Senile/age-related osteoporosis — a network-pharmacology study combined with lab validation identified extract compounds and molecular targets, then confirmed in experiments that the extract suppresses osteoclast differentiation and bone resorption in a concentration-dependent way; a related study localized this effect to blocking NF-κB signaling in osteoclast precursor cells, including human blood monocytes.
  • Glucocorticoid-induced (steroid) osteoporosis — animal research reports that Plastrum Testudinis extract reversed markers of spinal bone loss induced by glucocorticoid treatment in rats, affecting both bone-building (osteoblast) and bone-resorbing (osteoclast) marker genes.
  • Bone formation signaling — additional studies report the extract stimulates bone formation via Wnt/β-catenin signaling and promotes proliferation/osteogenic differentiation of bone marrow stromal cells through specific microRNA pathways.

  This body of evidence is preclinical (cell and animal models); human clinical trials specific to Gui Ban/Plastrum Testudinis for bone health were not identified. Reported non-bone research (e.g. neuroprotection in disease models) exists but is preliminary and outside the herb’s classical core indications.

  Sources: PMID 33984459 (network pharmacology + validation, senile osteoporosis, Journal of Ethnopharmacology, 2021); PMID 33974944 (osteoclast/NF-κB mechanism, Journal of Ethnopharmacology, 2021); PMID 27470350 (glucocorticoid-induced spinal osteoporosis, Biomedicine & Pharmacotherapy, 2016). Research context, not a therapeutic claim.

Chinese Herb Notes

• What is the difference between Gui Ban (plastron) and Gui Jia (the whole shell), and is there a substitute?

  Gui Ban traditionally refers specifically to the ventral plastron (belly shell) of the turtle, considered the more potent Yin-nourishing part, while Gui Jia is the broader/official term sometimes covering the whole shell (plastron plus dorsal carapace) as used in the current Chinese Pharmacopoeia. The distinction matters for sourcing and identity, since suppliers and texts are not always consistent about which part is meant.

  • Gui Ban (plastron only) — the classical, more concentrated Yin-tonic part, the form most materia medica texts describe for the actions above.
  • Gui Jia / whole shell — a broader designation used in some modern pharmacopoeial standards and commercial material, combining plastron and carapace.
  • Bie Jia (soft-shell turtle carapace, Carapax Trionycis) — a related but distinct animal-shell Yin tonic, often paired with Gui Ban in formulas such as Da Ding Feng Zhu; Bie Jia is considered better at softening hardness/dispersing masses, while Gui Ban is considered stronger for anchoring Yang and strengthening bone.

  Modern substitution: because of conservation pressure on wild turtle populations (see cautions/conservation note below), most commercial Gui Ban today is sourced from farmed animals rather than wild-caught stock, and some manufacturers use turtle-shell gelatin (Gui Ban Jiao) or other processed/concentrated preparations as an alternative to raw shell. This is documented here as a neutral sourcing/practice note, not a recommendation.

  Source: Sacred Lotus sources & references (formula composition data); cross-referenced against multiple online sources; Bensky, Materia Medica (3rd ed.); IUCN Red List species assessment (farming/trade data).

This herb is from an endangered/protected species and is illegal in the United States