What is Hangebyakujutsutemmato?

Hangebyakujutsutemmato is a thirteen-herb formula that has been part of East Asian medicine since the thirteenth century and is one of the numbered Kampo extracts that Japanese doctors can prescribe under national health insurance. Its name simply lists three of its lead herbs: hange (pinellia tuber), byakujutsu (atractylodes rhizome) and temma (gastrodia rhizome).

It is not a general-purpose dizziness remedy. In Kampo it is matched to a specific pattern: someone whose vertigo or headache comes with a weak stomach, a feeling of fullness after eating, poor appetite, cold hands and feet, tiredness and a tendency to feel worse in damp weather or after cold drinks. Practitioners describe this as 'water excess with spleen deficiency' — a traditional model, not a physiological measurement. A stronger, ruddier person with high blood pressure and pounding headaches would usually be given a different formula.

The honest position on evidence is that tradition and clinical practice carry most of the weight here. Japanese ENT and internal medicine departments have used it for decades for chronic dizziness, and there are small published case series and open-label reports, plus low-quality Chinese trials of the same formula for vertigo. That is a long way from proof, and the formula should be thought of as a reasonable traditional option rather than a demonstrated treatment.

How does Hangebyakujutsutemmato work?

There is no established mechanism in modern terms. Traditional reasoning is that pinellia, atractylodes, poria and alisma move 'stagnant water', ginseng and astragalus restore digestive strength, ginger and citrus peel warm and settle the stomach, and gastrodia calms 'internal wind' — the traditional term for spinning, shaking and headache. Laboratory work on individual herbs offers plausible but unproven leads: gastrodin from gastrodia has been studied for effects on cerebral blood flow and neuronal excitability, alisma and poria have mild diuretic activity in animals, and ginger constituents reduce nausea signalling. None of this has been shown to be what the whole formula does in people.

What forms does Hangebyakujutsutemmato come in?

In Japan the formula is almost always taken as a granulated hot-water extract sold in single-dose sachets (Tsumura TJ-37 and equivalents from other makers). The granules are dissolved in hot water or swallowed with water. Tablets and capsules of the same extract exist and are more convenient but bulkier per dose. A traditional decoction from raw sliced herbs is stronger and more customisable but requires a practitioner and 30–40 minutes of simmering. Product strength differs between manufacturers, so follow the label rather than converting doses between forms.

Where it comes from:

The formula comes from Li Dongyuan, the founder of the 'Spleen and Stomach' school of Chinese medicine, who described it in the Pi Wei Lun of 1249 for headache and dizziness arising from digestive weakness. A second, differently composed version appears in the later Qing text Yixue Xinwu; the Japanese Kampo version follows Li Dongyuan's line-up. It entered Japanese practice through the Edo-period study of Chinese classics and was included in the modern list of standardised Kampo extract preparations approved for insurance reimbursement in Japan in the 1970s and 1980s, where it remains in routine use for chronic dizziness.

What does Hangebyakujutsutemmato help with?

• Chronic dizziness and lightheadedness: This is the main reason the formula is prescribed in Japan, particularly in ENT and general internal medicine for persistent low-grade dizziness that has no clear structural cause and is worse in people with weak digestion. The supporting evidence is small open-label studies, hospital case series and long clinical familiarity rather than controlled trials. It is reasonable to try under practitioner guidance for lingering dizziness that has already been medically investigated, but it should never substitute for working out why someone is dizzy in the first place.
• Vertigo, including Ménière's-type symptoms: Traditional and clinical use covers spinning vertigo accompanied by nausea, especially the recurrent kind seen in Ménière's disease and vestibular disorders where fluid balance is thought to be involved. Japanese practitioners have used it alongside conventional treatment such as diuretics and betahistine. Published support is limited to small uncontrolled reports; there is no adequate randomised comparison against standard care. Ménière's disease and acute vertigo need proper diagnosis, so this belongs as a possible adjunct after assessment, not as a self-directed treatment.
• Headache with nausea or a heavy, foggy head: The formula is classically indicated for headache that comes with a muzzy, weighted feeling in the head and queasiness, often worse in humid weather or after overeating. Gastrodia, one of the lead herbs, has been studied on its own in Chinese trials for headache with mixed and generally low-quality results; the whole formula has not been tested properly in migraine or tension-type headache. Kampo practice would usually consider other formulas first for classic migraine, and reserve this one for the digestion-linked pattern.
• Nausea and gastric fullness: Pinellia, ginger, citrus peel and malt are all traditional stomach-settling herbs, and users often report that appetite and post-meal heaviness improve before the dizziness does. This is consistent with how the formula is selected — the digestive picture is part of the prescribing criterion, not a side benefit. Direct trial evidence for the formula in dyspepsia is essentially absent; related pinellia-containing formulas have somewhat more study. Persistent nausea, vomiting or weight loss needs medical assessment rather than a herbal formula.
• Fatigue with cold hands and feet: Ginseng, astragalus, atractylodes and dried ginger make this a mildly warming, tonifying formula, and the traditional patient it suits is pale, easily tired and intolerant of cold. Improvement in energy and cold sensitivity is a commonly described secondary effect in Kampo practice. There is no clinical trial evidence for this use specifically. Fatigue with cold intolerance can also reflect anaemia or an underactive thyroid, both of which are worth ruling out with a blood test before assuming a herbal answer.
• Orthostatic dizziness on standing: Kampo has a longstanding interest in orthostatic dysregulation, particularly in adolescents and in slight, low-blood-pressure adults, and this formula is one of several used for it when the picture includes morning sluggishness, nausea and poor appetite. Reported use rests on clinical experience and small Japanese case series. Anyone with frequent fainting, dizziness on standing with a documented blood pressure drop, or symptoms starting after a new medication should be assessed medically first — the cause is often correctable.

What can Hangebyakujutsutemmato help prevent?

• Traditionally used to reduce the frequency of recurring dizzy spells in people whose episodes cluster around digestive upsets, humid weather or fatigue — this is a practice pattern, not a demonstrated preventive effect
• No formula-level evidence supports it for preventing migraine, stroke or any specific disease

Which foods are rich in Hangebyakujutsutemmato?

Kampo dietary advice for this pattern is simple and low-tech: eat warm, cooked, easily digested food and avoid overloading a weak stomach. Practitioners typically suggest reducing cold drinks, ice, raw salads eaten in quantity, very rich or oily meals, and excessive fluid taken all at once — all of which are said to worsen the 'water excess' picture. Ginger, in tea or cooking, overlaps with two of the formula's own herbs and is a reasonable everyday addition for nausea. Regular, modest-sized meals matter more than any particular food, since skipping meals then eating heavily is a common trigger for the fullness-plus-dizziness pattern. For dizziness generally, keeping salt and fluid intake steady rather than swinging between extremes is sensible, and anyone with diagnosed Ménière's disease should follow the salt guidance their ENT specialist gives, which takes priority over traditional advice. Limit alcohol, which independently disturbs balance and inner-ear fluid, and keep caffeine moderate if it makes you jittery or worsens lightheadedness.

What are the side effects of Hangebyakujutsutemmato?

• Nausea, stomach discomfort or loose stools, particularly early on
• Loss of appetite in a minority of users (the opposite of the intended effect — a sign the formula may not suit)
• Rash, itching or redness: stop and seek advice
• Mild dry mouth or throat irritation
• Rare: liver enzyme elevation, reported across Kampo extracts generally — stop and see a doctor if you develop jaundice, dark urine, unusual fatigue or right-sided abdominal pain
• Very rare: interstitial pneumonia, reported with several Kampo formulas — stop immediately and seek urgent care if you develop a new dry cough, breathlessness or fever
• Theoretical reduction in breast-milk supply from the malt (bakuga) component, based on traditional use of malt to suppress lactation

Good to know:

This is one of the better-tolerated Kampo extracts because it contains no licorice, no ephedra and no rhubarb. The pinellia in it is processed during manufacture; raw, unprocessed pinellia is irritant and should never be self-prepared. Most reported problems are mild digestive upset or skin reactions that settle after stopping.

How much Hangebyakujutsutemmato should you take?

• Recommended daily: Typical Japanese practice for the standardised granulated extract is 7.5 g of extract granules per day, divided into two or three doses. Some products use different extract concentrations, so follow the manufacturer's label. Traditional decoction doses are set individually by a practitioner. Children's doses are reduced by weight or age and should be set by a prescriber.
• Best time of day: Divided across the day, conventionally two or three times daily; some practitioners suggest weighting the morning dose if dizziness is worst on waking.
• With or without food: Kampo convention is to take it before meals or between meals, on a relatively empty stomach, with hot water. If it causes nausea or stomach discomfort, taking it just after food is acceptable and does not appear to eliminate the effect.
• Time to effect: Nausea and appetite often respond within one to two weeks; dizziness and headache are usually judged over four to eight weeks.
• How long to take it: Reassess after about a month. If there is no change at all by 6–8 weeks, the pattern match is probably wrong and continuing is unlikely to help. Longer courses of several months are used in Japan for chronic dizziness, ideally with practitioner review; because the formula contains no licorice, the usual long-term Kampo monitoring concern for potassium is less pressing, but periodic review is still sensible.