What is Fukuryoingohangekobokuto?

Fukuryoingohangekobokuto is a Japanese Kampo herbal formula. It is used for stomach upset that comes with a tight, lumpy feeling in the throat. Typical targets are bloating, belching, reflux and nausea that get worse with stress.

It is a ministry-approved Kampo product in Japan, best known as Tsumura 116. The full name means Poria Drink combined with Pinellia and Magnolia Bark Decoction. It joins two older formulas into one fixed mix of nine herbs.

Here is the verdict on evidence. The formula has a long record in Kampo practice, but almost no controlled human trials. Long traditional use is not proof that a remedy works, and that caveat applies to everything below.

How does Fukuryoingohangekobokuto work?

The honest answer is that no one has shown how this formula works in people.

Ginger and processed pinellia both calm nausea in animal studies. Magnolia bark compounds look calming in animal work. Whether any of that happens in your gut or throat is not established.

In cell and animal work, citrus peel compounds appear to change how the gut moves. Human proof for this mix is missing.

Kampo has its own model. It says the formula moves stuck fluid and stuck qi in the chest and stomach. That is a traditional idea, not a lab finding.

What forms does Fukuryoingohangekobokuto come in?

Most people take it as extract granules in small single-dose sachets.

Other forms include fine powder, tablets and capsules from Japanese makers. A few practitioners still boil the raw herbs as a tea.

In Japan it is a listed prescription drug, coded Tsumura 116. Some lower-dose versions are sold over the counter.

Only use products made with processed pinellia (seihange). Raw pinellia tuber is not a home ingredient.

Where it comes from:

Both halves of this formula are old. Fukuryoin, or Poria Drink, is recorded in Chinese texts of the Tang era. Hangekobokuto comes from the Jingui Yaolue, written about the third century.

Japanese Kampo doctors joined the two into one prescription. That pairing is a Japanese habit rather than a Chinese classic.

It became a standard hospital and clinic product in modern Japan. It is widely used there for stomach and throat complaints.

What does Fukuryoingohangekobokuto help with?

• Functional dyspepsia (ongoing stomach discomfort with no clear disease found): This is the main Kampo use. Doctors in Japan pick it for fullness after meals, belching and low appetite. We found no randomised trial of this formula for it, so support is traditional and clinical habit only.
• Globus sensation (a lump-in-the-throat feeling): The hangekobokuto half is the classic Kampo choice for this. It is used when the throat feels blocked but nothing is found on exam. Human trial evidence for the combined formula is lacking, so see a doctor first to rule out other causes.
• Reflux symptoms such as heartburn and acid rising: It is often added in Japan when acid-blocking drugs only partly help. Small Japanese reports describe benefit, but they are open-label and short. This is not a substitute for tested reflux drugs.
• Nausea and mild vomiting: Ginger and processed pinellia are long-used anti-nausea (anti-sickness) herbs in Kampo. Ginger has some human data on its own for nausea. For this nine-herb mix, the anti-nausea use rests on tradition.
• Bloating and belching: Citrus peel and bitter orange are classic Kampo herbs for a full, gassy stomach. Animal work suggests effects on gut movement. There is no good human trial of this formula for bloating.
• Stress-linked stomach complaints: Kampo texts frame this formula for stomach symptoms that rise and fall with worry. That is a traditional pattern, not a tested effect on anxiety. Do not use it in place of care for a mood or anxiety problem.

Which foods are rich in Fukuryoingohangekobokuto?

1. Ginger: a food and a herb in this formula, long used for nausea
2. Perilla leaf (shiso): a common Japanese food herb in this mix
3. Citrus peel: the dried peel is the kitchen cousin of chinpi

Practical Tips:

Eating these foods is not the same as taking the formula, and food amounts are much smaller.

What are the side effects of Fukuryoingohangekobokuto?

• Nausea or stomach discomfort
• Loose stools or diarrhoea
• Loss of appetite
• Mild tingling or irritation in the mouth or throat
• Skin rash, redness or itching
• Restlessness or poor sleep (linked to the ginseng)
• Rare liver injury, shown by yellow skin or eyes, dark urine or deep tiredness
• Rare allergic reaction with swelling or trouble breathing

Good to know:

Most people tolerate this formula well. Side effects are usually mild and settle when you stop.

Liver injury and allergic reactions are rare but serious. Stop the product and get medical advice if either seems to be happening.

How much Fukuryoingohangekobokuto should you take?

• Recommended daily: A common adult dose is 7.5 g of extract granules a day. It is usually split into two or three doses. Follow the label, or the dose your doctor sets. Doses for children are lower and should be set by a doctor. Do not double up with other Kampo formulas that also hold pinellia, ginger or ginseng without advice.
• Best time of day: Usually two or three times a day, spread across the day. Many Japanese labels say before meals or between meals.
• With or without food: Take it on an empty stomach, before or between meals. If it upsets your stomach, take it with a little food instead. Granules are often stirred into warm water.
• Time to effect: Some people notice less nausea or bloating within a few days. For throat tightness and ongoing stomach upset, allow two to four weeks.
• How long to take it: Give it two to four weeks, then judge. If nothing has changed by about one month, stop and see your doctor. Longer use happens in Japan under supervision. If you use it for months, have your symptoms and liver checked from time to time.