
Keimei Gashin Powder S〈Powder〉
Authentic crude drug gastrointestinal medicine characterized by the unique bitterness and refreshing sensation of Gajutsu
Product overview
Keimei Gashin Powder S〈Powder〉 is a pure crude drug gastrointestinal medicine with Gajutsu (Gajutsu) cultivated under contract in Yakushima and Tanegashima as the main ingredient, combined with true kelp powder. It is made for those with weak stomach function, prone to indigestion, or concerned about overeating or overdrinking.
Powder type where you can directly feel the original bitterness and refreshing sensation of Gajutsu. As the saying goes, "Good medicine tastes bitter," this formula values the flavor of the crude drug itself. Uses crystalline cellulose as an excipient and is conveniently packaged in individual doses for easy carrying.
4 features
Actively supports stomach function
Gajutsu powderGajutsu powder increases gastric mucosal blood flow and activates stomach function. Its bile secretion-promoting effect helps digest fats and relieves indigestion after fatty meals.
Gently protects digestive tract mucosa
True kelp powderTrue kelp powder derived from Makonbu produced in Hakodate, Hokkaido, gently coats and protects the digestive tract mucosa. Supports recovery of weakened stomach and intestines.
Original bitterness and refreshing sensation of crude drugs
Crystalline cellulosePowder type using crystalline cellulose as an excipient. You can directly feel the unique bitterness and refreshing sensation of Gajutsu. Supported by those who like the flavor of crude drugs and long-time users.
Convenient individual packets for each dose
Packet typeIndividually packaged 3g doses for adults. Easy to carry and allows accurate dosing at work or on the go. Designed to help you not miss the timing of intake.
Ingredients and quantities (per 3g packet)
Keimei Gashin Powder is made mainly from the crude drug Gajutsu, combined with true kelp powder, turmeric, ginger, and crystalline cellulose as additives, all plant-derived ingredients.
A crude drug made from the rhizome of Gajutsu from the ginger family. Enhances stomach function and aids digestion, improves gastric mucosal blood flow and gastric mucosal damage. Promotes bile secretion to support fat digestion. Main active ingredient. Produced in Yakushima and Tanegashima.
A crude drug made from the stems and leaves of true kelp from the kelp family. Gently coats and protects the stomach and digestive tract mucosa, helping recovery of weakened stomach and intestines. Produced in Hakodate, Hokkaido.
A crude drug made from the rhizome of turmeric from the ginger family. Included as a flavoring agent with bitterness and aroma. Plays a role in adjusting the flavor when taken.
A crude drug made by drying the rhizome of ginger from the ginger family. Included as a flavoring agent with spicy and aromatic properties. Adds a refreshing flavor when taken.
* Contains crystalline cellulose as an excipient (powder type). Partially alpha-starch hydrolyzed starch is used in the fine granules type.
Indications and effects
Dosage and administration
Take the following amount with water or warm water.
Take 4 times a day, after meals and before bedtime. (Up to 5-6 times a day is allowed. In that case, keep about 4 hours interval.)
| Age | Dose amount (packets) | Number of doses |
|---|---|---|
| 15 years old and above | 4 times a day | 1 packet (3g) |
| 11 years old to under 15 years old | 4 times a day | 2/3 packet (2g) |
| 7 years old to under 11 years old | 4 times a day | 1/2 packet (1.5g) |
| 3 years old to under 7 years old | 4 times a day | 1/3 packet (1g) |
| Under 3 years old | Do not take | |
⚡ Tips for taking: Hold 1-2 sips of water in your mouth first, then put the medicine in and mix well with the water before swallowing for smooth intake. Also recommended is putting the medicine in a glass of water or warm water and stirring well before drinking.
Keimei Gashin Powder S Powder vs Fine granules Comparison
You can check the differences between the two types with the same active ingredients and indications at a glance.
| Comparison items | Keimei Gashin Powder S〈Powder〉Product on this page | Keimei Gashin Powder S〈Fine granules〉 |
|---|---|---|
| Drug classification | Class 2 OTC Drug | Class 2 OTC Drug |
| Dosage form | Powder (powder form, unique bitterness and refreshing sensation of Gajutsu) | Fine granules (smooth drinking texture) |
| Active ingredients | Gajutsu powder 2,500mg, true kelp powder 100mg (per 3g packet) | Gajutsu powder 2,500mg, true kelp powder 100mg (per 3g packet) |
| Additives (excipients) | Turmeric powder, ginger powder, crystalline cellulose | Turmeric powder, ginger powder, partially alpha-starch hydrolyzed starch |
| Indications and effects | Same (loss of appetite, indigestion, digestive disorders, etc.) | Same (loss of appetite, indigestion, digestive disorders, etc.) |
| Dosage and administration | 4 times a day after meals and before bedtime (3g per packet per dose) | 4 times a day after meals and before bedtime (3g per packet per dose) |
| Ease of drinking | ○ You can feel the unique bitterness and refreshing sensation of Gajutsu. For those who prefer the traditional flavor. | ◎ Does not linger in the mouth and is easy to take. Suitable for those who dislike Powder medicine. |
| Taste & Flavor | Strong bitterness and refreshing sensation (the flavor of "good medicine tastes bitter") | Mild (herbal flavor remains but relatively gentle) |
| For these people | For those who prefer the flavor and bitterness of herbal medicine or have been taking it traditionally | For those who dislike Powder medicine, first-time users, or those who prioritize ease of taking |
Frequently Asked Questions
🌿 Brand Story | Keimeigashin Powder born from great nature
Since its founding in 1933, Keimeido has been a manufacturer that produces and sells the gastrointestinal medicine "Keimeigashin Powder," which uses galangal (galangal rhizome) grown in the great nature of Yakushima and Tanegashima as its main ingredient, based on the philosophy of "helping those suffering from illness and saving lives." We take pride and care in every step from raw material cultivation to manufacturing and shipping.
The medicinal herb galangal is a ginger family plant native to tropical Asia. Yakushima is considered the northern limit for cultivating galangal, which is sensitive to cold. It grows maximally in summer and transfers all nutrients from leaves and stems to the rhizomes in winter to enter dormancy. These harsh growing conditions produce high-quality galangal rich in essential oils. We cultivate under contract with local farmers and manufacture at our own factory on Yakushima Island.
Every April, galangal seed rhizomes are planted. Fields with deep topsoil and good drainage are selected, and strong germination occurs by late May.

The peak growth period is September to October when the galangal rhizomes enlarge the most. Leaves grow large and dense, and rich essential oils accumulate in the rhizomes.

The harvest season is from February to April when the leaves of galangal wither and the rhizomes mature underground, entering dormancy. The peak harvest is in March. Only rhizomes containing the maximum effective ingredients are carefully selected and harvested.

The harvested raw medicinal herbs are properly stored in an air-conditioned warehouse. Then, through milling, mixing, and granulation processes, Keimeigashin Powder is completed. After filling, strict checks on weight and number of packets are conducted, and only products that pass shipment inspection are delivered to customers.
⚠️ Usage Precautions
- Do not take if you have had hypersensitivity reactions (rash, redness, itching, edema, etc.) to this product or its ingredients.
- If you are receiving medical treatment, have had allergic reactions to medications, or have been diagnosed with liver disease, consult a doctor, pharmacist, or registered seller before use.
- If rash, redness, itching, swelling, abdominal pain, nausea, diarrhea, or other symptoms appear after taking the product, stop use and consult a doctor, pharmacist, or registered seller.
- Rarely, shock (anaphylaxis) or liver dysfunction may occur; if you experience any abnormalities, seek medical attention immediately.
- If symptoms do not improve after about one month of use, stop taking the product and consult a doctor, pharmacist, or registered seller.
- Those with chronic gastrointestinal diseases may feel abdominal bloating or sounds during the initial period of use, but these symptoms usually settle within about a week.
- If you have any questions, please consult a doctor, pharmacist, or registered seller.
📦 Storage Precautions
- Store in a cool place away from direct sunlight.
- Keep out of reach of children.
- Do not transfer to other containers (this may cause misuse or deterioration).
- The expiration date is 3 years after manufacture. Do not take the product after the expiration date.
- Please use promptly after opening the individual packets.
















































































