Yu Jin (Turmeric Tuber)

Chinese Herb Actions

Chinese Herb Dosage

• What is the typical dosage of Yu Jin?

  Roughly 3–12 g in decoction — published materia medica ranges cluster around 6–12 g (Bensky, Chen & Chen), with some sources allowing a slightly lower starting dose of ~3–5 g. It is taken as a normal decoction herb (no special processing timing required, unlike some aromatics in the same formulas).

  • Raw Yu Jin — favors the heat-clearing, orifice-opening, and cooling-the-blood actions.
  • Vinegar-processed Yu Jin (medicinally processed, cu preparation) — some traditions use vinegar processing to focus the herb more toward the qi- and pain-relieving action; not universal across all schools.

  Source: Sacred Lotus sources & references; cross-referenced against multiple online sources and Bensky/Chen & Chen dosage ranges. Reference only — not a prescription.

Chinese Herb Contraindications & Cautions

• Are there cautions for Yu Jin?

  Yu Jin should be avoided in pregnancy and is not appropriate for patients without genuine qi-blood stagnation, since its cold, blood-moving nature can aggravate deficiency or cold patterns. It is also classically listed as incompatible with Ding Xiang (Clove) under the traditional Shijiu Wei (Nineteen Fears) pharmacy pairings, and the two are not prescribed together in the same formula.

  • Pregnancy — avoid or use only under professional supervision, due to the blood-invigorating action.
  • Deficiency patterns — not indicated where there is no qi-blood stagnation, and used cautiously in Yin- or blood-deficient patients without stasis.
  • Classical incompatibility — traditionally described as incompatible with Ding Xiang (Clove) per the Nineteen Fears pairings (Ding Xiang is said to “fear” Yu Jin); the two are conventionally kept out of the same prescription.

  Source: Sacred Lotus sources & references; cross-referenced against multiple online sources and classical pharmacy tradition (Shijiu Wei, Nineteen Fears) as recorded in standard materia medica references.

Chinese Herb Toxicity & Overdose

• Low, at standard decoction doses. Yu Jin is not classed among Chinese medicine’s toxic herbs, and significant adverse effects are not reported at typical materia medica dosages. Preclinical research on isolated Curcuma constituents (such as β-elemene derivatives) uses concentrated, purified compounds in cell or animal models — a different exposure context from the whole decocted tuber, and should not be read across as a toxicity profile for Yu Jin itself.

  Source: Sacred Lotus sources & references; materia medica consensus; isolated-compound research noted below for context only.

Herb-Drug Interactions

• No well-established clinical herb–drug interactions are documented for Yu Jin. Given its traditional blood-invigorating action, theoretical caution is reasonable for patients on anticoagulant or antiplatelet medication, though this is a precautionary extrapolation rather than 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 Yu Jin (Curcuma tuber)?

  Yes — but most of the detailed modern pharmacology is on isolated Curcuma constituents (curcumin, β-elemene) rather than the whole decocted Yu Jin tuber, so it should be read as research context, not evidence for the traditional herb's clinical effect. Reviews of the tuber-source species themselves do support several traditional uses.

  • Curcuma kwangsiensis root tuber (a recognized Yu Jin source plant) — a 2022 review reports traditional use for moving qi, clearing heat, benefiting the Gallbladder, and treating jaundice, consistent with the classical action profile, alongside modern pharmacology showing hepatoprotective, antitumor, antioxidant, and lipid-lowering activity in preclinical models.
  • Curcuma wenyujin (another recognized Yu Jin source plant) — a 2021 review in the Journal of Ethnopharmacology notes over 1,500 years of traditional use for blood stasis, qi movement, and pain, and catalogs 169 isolated compounds (mainly sesquiterpenoids) with preclinical anti-inflammatory, antitumor, antioxidant, antibacterial, antiviral, and hepatoprotective findings; the authors call for more clinical research and better quality standards.
  • β-Elemene (an isolated sesquiterpene from Curcuma wenyujin) — a laboratory study modified β-elemene into a tryptophan-ester derivative that induced apoptosis in human leukemia cells and showed synergy with arsenic trioxide; this is isolated-compound, cell-culture research, not evidence about the traditional herb.
  • Curcumin — the compound most associated with turmeric in popular research is mainly extracted from the rhizome of Curcuma longa (i.e., closer to Jiang Huang than to the Yu Jin tuber) and has an extensive preclinical literature on anti-inflammatory and antioxidant mechanisms across many disease models; this body of work is about the isolated compound, not the traditional Yu Jin decoction, and is included here as context only.

  Sources: PMID 35534245 (Curcuma kwangsiensis root tuber review); PMID 33309584 (Curcuma wenyujin review, Journal of Ethnopharmacology); PMID 18538921 (β-elemene derivative, Cancer Letters); PMID 34237598 (curcumin pharmacology review, Biomedicine & Pharmacotherapy). Research context, not a therapeutic claim.

Chinese Herb Notes

• How is Yu Jin different from Jiang Huang?

  Yu Jin and Jiang Huang come from the same plant genus but are different plant parts with different properties — Yu Jin (Tuber Curcumae) is the dried tuberous root of Curcuma wenyujin, C. longa, C. kwangsiensis, or C. phaeocaulis, while Jiang Huang (Rhizoma Curcumae Longae) is specifically the dried rhizome of Curcuma longa. Because the plant part differs, so does the traditional action: Yu Jin is cold, moves qi and blood, cools the blood, opens the orifices, and benefits the Gallbladder; Jiang Huang is warm, invigorates the blood and moves qi, and is particularly favored for painful obstruction of the shoulder and upper body, often used topically as well as internally. A related tuber/rhizome from the same species group, E Zhu (Rhizoma Curcumae), breaks blood stasis more forcefully still. The three are easy to confuse by name family but are not interchangeable.

  Key combination: Yu Jin is classically combined with alum (Ming Fan) in the formula Bai Jin Wan for phlegm-heat or damp-heat misting the Heart (agitation, seizures, manic disturbance). It also appears in the orifice-opening formula An Gong Niu Huang Wan for Phlegm-Heat obstructing the sensory orifices and Wind-stroke coma. (Traditional formula context, not treatment advice.)

  Note: Because Chinese Pharmacopoeia-recognized Yu Jin can come from four different Curcuma species, commercial material and its exact chemical profile can vary by source plant and region; this is a known sourcing variable in the trade rather than a contradiction between materia medica texts.

  Source: Sacred Lotus sources & references; cross-referenced against multiple online sources and Bensky/Chen & Chen species and processing notes; Sacred Lotus formula data (An Gong Niu Huang Wan).

This herb antagonizes or is antagonized by:

• Ding Xiang (Flos Caryophylli)