From one stretch of sea, in one month of the year.
Oysters raised where streams from Miyajima’s old-growth forest meet the sea, kept whole and milled to powder rather than reduced to an extract. Blended with galacto-oligosaccharide, heat-treated HJ1 lactic acid bacteria and vitamins, and finished in Japan at a GMP-certified facility.
Oyster powder food — western waters of Hiroshima
The luxury of
not extracting.
01 — Process
Many oyster supplements are built on an extract: the oyster is simmered and its soluble fraction drawn off. SANBI OYSTER CLAIRE is made by a process that keeps the drip in, milling the oyster itself into powder.
You can check this on the pack. The first item in the ingredient list is oyster powder, not oyster extract.
| Where an extract is used | |
|---|---|
| Form of the raw material | Oyster extract This product: oyster powder, the oyster itself |
| How the label reads | “Oyster extract” This product: oyster powder (oyster, western coastal waters of Hiroshima) |
| How origin is stated | “Product of Japan”, “Hiroshima” This product: down to the stretch of sea |
Western waters of Hiroshima — between Miyajima and Hatsukaichi
02 — Origin
The raw material is SANBI OYSTER, farmed by Teranishiya itself in the water between the World Heritage island of Miyajima and the city of Hatsukaichi, fed by streams running out of Miyajima’s old-growth forest.
From spat collection through farming, processing and shipping, the work is done in-house by growers with more than fifty years at it. The harvest is taken between February and March, when the oysters are full and have not yet spawned, and graded by hand. No oysters are bought in from elsewhere.
| Zinc | 66.8 mg |
|---|---|
| Magnesium | 185 mg |
| Calcium | 92.1 mg |
| Iron | 10.9 mg |
| Selenium | 201 µg |
| Taurine | 3.27 g |
Tested by the Japan Food Research Laboratories (certificate no. 25062665001-0101, 11 July 2025) on the raw SANBI OYSTER, per 100 g. Testing is repeated and figures vary between samples; the table shows the most recent certificate.
These are figures for the raw material, not the nutrition panel of the finished product. For the product’s own panel, see Specification.
What remains, after every stage of selection.
Harvested between February and March, when the oysters are full and have not yet spawned, then graded by hand against the house standard. When every stage is done, about two per cent of the catch remains.
On the grading of SANBI OYSTER, the raw material. From Teranishiya’s own account.
03 — Formula
Oysters from the western coastal waters of Hiroshima, milled rather than extracted. It is the first item on the ingredient list.
An oligosaccharide also found in human milk. A non-digestible carbohydrate, at 100 mg per four tablets.
The HJ1 strain developed by H&J Co., Ltd. of Hatsukaichi, Hiroshima, grown by static culture. It is included as heat-treated, non-viable cells.
Vitamins A, C, D and E together with folic acid. Amounts per four tablets are listed under Specification.
One pouch, one month
On the face of the pack, the mark of the raw material. The name of the oyster is the name on the product.
Four a day, thirty days. Keep cool, away from direct sunlight and humidity.
One standard of quality from goods-in to despatch.
04 — Specification
| Product name | SANBI OYSTER CLAIRE (讃美オイスタークレール) |
|---|---|
| Category | Oyster powder food (牡蠣粉末加工食品) |
| Ingredients | Oyster powder (oyster, western coastal waters of Hiroshima), galacto-oligosaccharide, lactic acid bacteria (heat-treated cells, dextrin), vitamin E–containing vegetable oil / cellulose, vitamin C, modified starch, calcium stearate, vitamin A, folic acid, vitamin D |
| Net content | 30 g (250 mg × 120 tablets) |
| Form | Tablet |
| Suggested use | Four tablets a day with water or lukewarm water. |
| Storage | Keep cool, away from direct sunlight and humidity. |
| Best before | Printed on the lower edge of the pack. |
| Country of origin | Japan |
| Distributed by | Teranishiya Co., Ltd. 1-13-15 Hayashigahara, Hatsukaichi, Hiroshima 739-0444, Japan +81-829-30-7610 |
| Energy | 4.1 kcal |
|---|---|
| Protein | 0.06 g |
| Fat | 0.07 g |
| Carbohydrate | 0.82 g |
| Salt equivalent | 0.005 g |
| Folic acid | 400 µg |
| Vitamin A | 800 µg |
| Vitamin C | 100 mg |
| Vitamin D | 25 µg |
| Vitamin E | 33 mg |
Contains oyster (mollusc). Please check the ingredient list if you have a food allergy. Anyone under medical care, pregnant or breastfeeding should consult a doctor before use.
The panel above is the Japanese domestic label. Labelling requirements differ by destination country; we will prepare artwork and documentation to match yours.
05 — Quality
GMP — Good Manufacturing Practice — is the standard governing every step from goods-in through production to despatch, so that a product is made safely and to a consistent quality.
06 — Trade
SANBI OYSTER CLAIRE is distributed by Teranishiya Co., Ltd. of Hiroshima. We are open to export and wholesale discussions, and would rather talk about your market than send a price list.
Minimum order quantity, lead time, FOB pricing and HS code are quoted on enquiry. Tell us the destination country and the channel you sell into, and we will come back with figures.
Documentation we can provide
On the word Sanbi
Not the praise we give ourselves — the praise of the people who taste it. That is the oyster we want to make.
Sanbi means to praise what is excellent in another. Only through the daily work of grading, quality and hygiene, done patiently, does a mouthful worth praising come about. The name SANBI OYSTER was chosen with that in mind.
07 — Questions
An extract is the soluble fraction drawn off by simmering the oyster. This product is not extracted; the oyster itself is milled into powder. You can tell them apart by whether the label reads “oyster extract” or “oyster powder”.
The western coastal waters of Hiroshima, Japan. The ingredient list on the pack names the sea area.
Four tablets, 1,000 mg in total, with water. One pouch holds 120 tablets, thirty days at that rate.
No. They are included as heat-treated, non-viable cells, as stated in the ingredient list.
Yes. The product contains oyster, a mollusc.
Permitted ingredients and labelling rules differ by country, and the current pack carries the Japanese domestic label. Tell us the destination and we will go through the requirements with you.
08 — The company
| Company | Teranishiya Co., Ltd. (株式会社寺西屋) |
|---|---|
| Founded | 16 October 2019 |
| Address | 1-13-15 Hayashigahara, Hatsukaichi, Hiroshima 739-0444, Japan |
| Representative | Tomokazu Teranishi, President |
| Business | Production and sale of oysters, processed oyster products and supplements; restaurant operation |
| Telephone | +81-829-30-7610 |
| Brand site | sanbikaki.com (Japanese) |
Contact
Wholesale and import enquiries, document requests and press questions all reach the same desk.
Telephone: +81-829-30-7610 (Teranishiya Co., Ltd.)
Oyster Claire