What is Hangeshashinto (Kampo)?

Hangeshashinto is a classical seven-herb Kampo formula whose roots trace back to the Chinese medical text Shang Han Lun (circa 200 CE). It was adopted into Japanese Kampo practice and is today one of the most rigorously studied traditional formulas in modern oncology settings. In Japan, it is commercially standardized and widely prescribed by physicians alongside conventional cancer treatment.

How does Hangeshashinto (Kampo) work?

The formula works through several complementary pathways: its bitter alkaloids (from Coptis and Scutellaria) calm gut inflammation and inhibit bacterial overgrowth in the mouth and intestines, while ginger and Pinellia ease nausea by settling the stomach's signaling. Licorice and jujube add a soothing, protective quality to mucous membranes. Together, these herbs address what Kampo calls a 'hot-cold disharmony' in the digestive tract — essentially, an imbalance between inflammation and functional weakness.

What forms does Hangeshashinto (Kampo) come in?

In Japan, TJ-14 (Tsumura brand granules) is the most clinically studied and most commonly prescribed form. For oral mucositis specifically, granules dissolved in warm water and used as a gargle before swallowing appear to produce the best results — direct contact with mouth sores is considered part of the mechanism. Outside Japan, encapsulated extracts and raw decoction are available through specialty Kampo and TCM practitioners.

Where it comes from:

The formula originates from Zhang Zhongjing's Shang Han Lun, written around 200 CE during the Han Dynasty in China. It was brought to Japan alongside Chinese medicine and refined into the Kampo tradition over centuries. Today it remains one of the 148 Kampo formulas covered by Japan's national health insurance for prescription use, reflecting its integration into mainstream Japanese clinical practice.

What does Hangeshashinto (Kampo) help with?

• Chemotherapy mouth sores (oral mucositis): This is Hangeshashinto's most researched benefit. When the granules are dissolved in water and used as a gargle before swallowing, the formula directly contacts inflamed mouth tissue, reducing pain, severity, and duration of sores caused by chemotherapy. Multiple clinical trials in Japan have shown meaningful reductions in mucositis grade in cancer patients.
• Nausea and vomiting: Ginger and Pinellia — two of the core herbs — have well-established anti-nausea properties. The formula has been used for centuries to calm an unsettled stomach and is used in modern Kampo practice alongside antiemetic medications in chemotherapy patients.
• Diarrhea from chemotherapy or IBS: Berberine-containing herbs in the formula help regulate gut motility and reduce intestinal inflammation. Clinical use in Japan includes chemotherapy-related diarrhea, and traditional use covers chronic loose stools from gut weakness or inflammation.
• Gastritis and stomach inflammation: The formula has traditionally been used for stomach pain with a feeling of fullness, bloating, and mild nausea — what Kampo describes as 'epigastric stuffiness.' Its anti-inflammatory and mucosal-protective herbs work together to soothe an irritated stomach lining.
• Irritable bowel syndrome (IBS): Hangeshashinto addresses both the cramping and the irregular bowel habits common in IBS by calming gut inflammation and supporting healthy digestive rhythm. It is used in Japanese clinical practice for functional bowel complaints that have not responded fully to standard treatment.
• Stomatitis from cancer treatment: Beyond mucositis from systemic chemotherapy, the formula is also studied for oral stomatitis from targeted therapies (such as mTOR inhibitors like everolimus), with clinical trials showing reduced severity and faster healing compared to standard oral care alone.
• Digestive discomfort and bloating: One of the core traditional uses of this formula is for 'pi' — a Kampo concept describing a sensation of blockage or heaviness in the upper abdomen. It is suited for people who feel full quickly, bloated, or have mixed constipation-and-loose-stool patterns.
• Loss of appetite during illness: Ginseng and jujube in the formula are classic Kampo tonics used to support digestion and restore appetite during recovery from illness or cancer treatment fatigue. The formula is often prescribed to help patients maintain nutritional intake during chemotherapy.
• Gut inflammation: The berberine and baicalin content provide meaningful anti-inflammatory effects in the intestinal lining. This makes the formula relevant beyond oncology — it is used in Japanese clinical practice for inflammatory bowel conditions and chronic gut discomfort.

What can Hangeshashinto (Kampo) help prevent?

• Progression of mild oral mucositis to severe grades during chemotherapy
• Recurrence of functional digestive symptoms during cancer treatment

Which foods are rich in Hangeshashinto (Kampo)?

Hangeshashinto is a multi-herb formula and is not found in food. However, several of its key ingredients overlap with everyday foods that support the same digestive and anti-inflammatory pathways. Fresh ginger (soups, teas, stir-fries) provides gingerols that ease nausea and gut inflammation. Licorice root tea delivers glycyrrhizin, which soothes mucous membranes. Jujube dates are a traditional digestive tonic eaten throughout Asia. Foods rich in berberine-adjacent bitter compounds — such as bitter greens, turmeric, and goldenseal tea — support the formula's gut-calming effects. A warm, cooked, easy-to-digest diet (congee, broths, steamed vegetables) aligns with the Kampo dietary philosophy that supports this formula's action. Avoid raw, cold, greasy, or spicy foods during treatment, as these are considered in Kampo to counteract the formula's warming digestive benefits.

What are the side effects of Hangeshashinto (Kampo)?

• Loose stools or mild diarrhea (especially when starting)
• Stomach discomfort or nausea in sensitive individuals
• Elevated blood pressure with prolonged high-dose use (due to licorice content)
• Low potassium (pseudohyperaldosteronism) with very long-term use of licorice-containing formulas
• Rare drug-induced liver injury: reported with long-term use of some Kampo formulas; monitor liver enzymes if using for months
• Allergic reactions (rare): possible sensitivity to any of the seven component herbs

Good to know:

Hangeshashinto has a good safety record in clinical trials and in decades of Japanese clinical use. Most people tolerate it well. The main concerns involve long-term use and combining it with other licorice- or berberine-containing products.

How much Hangeshashinto (Kampo) should you take?

• Recommended daily: 7.5 g/day of standardized granules (TJ-14), typically divided into 3 doses of 2.5 g each; for oral mucositis, dissolve in 10–15 mL warm water, gargle for 30 seconds, then swallow
• Best time of day: Before meals — traditional Kampo timing places the formula 30 minutes before eating to prime digestive function
• With or without food: Take on an empty stomach or before meals for best absorption; the gargle method for mucositis should be done before eating or drinking
• Time to effect: Oral mucositis: noticeable improvement within 7–14 days; nausea and digestive symptoms: often within 3–7 days
• How long to take it: For chemotherapy-related use: continue throughout the treatment cycle under medical supervision. For general digestive use: 4–8 weeks is a typical course; reassess and cycle if continuing long-term. Avoid continuous use beyond 3 months without practitioner guidance due to licorice content.