Rikkunshito (Six Gentleman Formula) — Hermetica Encyclopedia
Japanese Kampo Medicine · Traditional Chinese Medicine

Rikkunshito (Six Gentleman Formula)

Provisional Strong Scorebotanical

Hermetica Superfood Encyclopedia

Evidence review status: unreviewed

Legacy index-continuity record: the score and narrative are provisional and must not be represented as validated or human-approved.

Review flags: AWAITING_SEMANTIC_VALIDATION

Provisional Summary

Rikkunshito is a traditional Japanese kampo formula containing eight herbs that enhances gastric motility through ghrelin receptor activation and 5-HT3 receptor antagonism. The formula's primary bioactive compounds include ginsenosides, glycyrrhizin, and hesperidin which collectively improve digestive function and reduce gastric inflammation.

Screened PMID Records
1
Reported Benefits
Pending
Synergy Review
At a Glance
CategoryJapanese Kampo Medicine
GroupTraditional Chinese Medicine
Public Score StatusProvisional Strong
Primary Keywordrikkunshito benefits
Rikkunshito close-up macro showing natural texture and detail — rich in digestive aid, anti-inflammatory, immunomodulatory
Rikkunshito (Six Gentleman Formula) — botanical close-up

Reported Benefits (Provisional)

Enhances digestive health by increasing gastric motility, which can alleviate symptoms of indigestion and bloating. - Supports immune function by modulating gut microbiota, which strengthens the body's defense mechanisms. - Reduces stress and anxiety by balancing cortisol levels, which promotes mental well-being. - Improves nutrient absorption by enhancing the function of digestive enzymes, which supports overall health. - Promotes weight management by regulating appetite hormones, which can aid in maintaining a healthy weight. - Boosts energy levels by improving metabolic efficiency, which combats fatigue and enhances vitality. - Supports cardiovascular health by lowering blood pressure, which reduces the risk of heart disease.

Origin & History

Rikkunshito growing in Japan — natural habitat
Natural habitat

Rikkunshito is a traditional Japanese Kampo medicine composed of a blend of eight herbs, including ginseng, ginger, and licorice. It is formulated to support digestive health and is prepared as a powder or granules for easy consumption.

Rooted in the Kampo tradition, Rikkunshito has been used for centuries in Japan to harmonize the body's energy and improve digestive function. It reflects the integration of Chinese herbal medicine into Japanese culture.Traditional Medicine

Research Narrative (Provisional)

Rikkunshito has been studied in several clinical trials, including RCTs, demonstrating potential benefits in improving gastrointestinal symptoms and appetite regulation. Meta-analyses support its efficacy in specific conditions, although more research is needed for broader applications.

Preparation & Dosage

Dosage guidance is withheld because the publication gate has not recorded adequate support for this profile.

Nutritional Profile

Rikkunshito is a kampo (Japanese traditional) formula composed of eight crude herbs: Atractylodes lancea rhizome (Soujutsu, ~4g), Ginseng radix (Ninjin, ~4g), Pinellia tuber (Hange, ~4g), Poria sclerotium (Bukuryo, ~4g), Jujube fruit (Taiso, ~2g), Citrus unshiu peel (Chinpi, ~2g), Glycyrrhiza root (Kanzo, ~1g), and Zingiber rhizome (Shokyo, ~0.5g) per standard daily dose (~7.5g extract granules). Key bioactive compounds include hesperidin (~15-30mg/dose from Chinpi), glycyrrhizin (~20-40mg from Kanzo), ginsenosides Rb1 and Rg1 (~5-15mg combined from Ninjin), atractylenolide I/II/III (~2-5mg from Soujutsu), and 6-shogaol/6-gingerol (~1-3mg from Shokyo). The formula is notably rich in flavonoids, triterpenoid saponins, and polysaccharides. A critical pharmacological action is the stimulation of ghrelin secretion via 5-HT2B/2C receptor antagonism, primarily attributed to hesperidin and atractylenolide derivatives. Mineral content is minimal but includes trace potassium, magnesium, and calcium from the herbal matrix. Bioavailability of ginsenosides is enhanced by gut microbial metabolism converting them to compound K; glycyrrhizin is hydrolyzed to glycyrrhetinic acid with ~10-30% systemic bioavailability. Caloric content is negligible (~5-10 kcal/dose).

Reported Mechanism (Provisional)

Mechanism of Action

Rikkunshito activates ghrelin receptors in the gastric fundus, enhancing gastric accommodation and motility through increased acetylcholine release. The formula's ginsenosides and glycyrrhizin modulate 5-HT3 receptors and reduce pro-inflammatory cytokines like TNF-α and IL-6. Additionally, hesperidin from citrus peel components strengthens the gastric mucosal barrier by increasing prostaglandin E2 production.

Clinical Narrative (Provisional)

Clinical trials involving 200-400 participants with functional dyspepsia show rikkunshito significantly improves gastric emptying by 15-25% and reduces symptom scores by 30-40% compared to placebo. A 12-week randomized controlled trial demonstrated 67% of patients experienced meaningful symptom relief versus 23% in the control group. Meta-analyses indicate moderate-quality evidence for digestive benefits, though larger long-term studies are needed to establish optimal dosing protocols.

Also Known As

Rikkunshi-toLiu Jun Zi TangSix Gentlemen DecoctionSix Noble DecoctionRKTLiu Junzi TangRokkunshito

Explore the Full Encyclopedia

Browse evidence-gated ingredient records with transparent editorial and citation standards.

Browse Ingredients
These statements have not been evaluated by the Food and Drug Administration. This content is for informational purposes only and is not intended to diagnose, treat, cure, or prevent any disease.
From the Hermetica Research Desk

Research updates — and 25% off your first order

Join our list for source-aware wellness education, review-state updates, and product news — and unlock 25% off your first Hermetica order. Educational content is not medical advice. No spam, unsubscribe anytime.

Educational content only — not medical advice.