sonomono® Products
Sprinkle, mix, and enjoy!
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Supervised by experts
sonomono® Products
Sprinkle, mix, and enjoy!
Supervised by experts


sonomono natto makes it easy to enjoy the natural, gut-friendly probiotics of Japan’s superfood, natto.
Our mission is to empower gut health through the pure power of natural ingredients, helping people to enjoy active and healthy lives for generations to come.
After careful and thoughtful consideration, we creaated an extremely simple and unique product.



Our specially selected soybeans undergo a meticulous fermentation process with our unique natto bacteria strain. After that, we apply freeze-dried technology to retain all nutrients and change the probiotics state into spores that survive the gastric acid and reach the intestine alive.




Soybeans Grown with Care and Love
We proudly use Fukuyutaka soybeans, meticulously cultivated by the Kohoku Town Organic Research Association in Saga Prefecture.
Known for their exceptional quality, these soybeans are plump and protein-rich, making them a perfect choice for crafting natto. The dedication of the local farmers to sustainable farming practices ensures that each soybean is grown without harmful chemicals, allowing for a natural and wholesome ingredient that you can trust.



Original Bacteria Strain

sonomono’s natto bacteria strain is the result of years of craftsmanship. Seasoned natto makers, who understand every aspect of natto production, have used their intuition to select and preserve these unique strains over time, guaranteeing an exceptional product.




Unlike the bacteria found in raw natto, which often cannot survive stomach acid, the bacteria in sonomono natto are protected by a tough “spore” shell. This protective layer allows them to endure the harsh conditions of stomach acid, ensuring that they reach your intestines alive and ready to deliver their full health benefits.
The starch-degrading enzymes from natto bacteria produce oligosaccharides, which serve as nourishment for these beneficial bacteria. Additionally, natto bacteria release catalase, an enzyme that breaks down hydrogen peroxide (a compound that inhibits the growth of lactic acid bacteria and Bifidobacteria) into harmless oxygen and water. This process allows lactic acid bacteria and Bifidobacteria to thrive alongside natto bacteria, promoting a healthier gut environment.

Undigested food and gut bacteria that have finished their job are naturally excreted from the body. Natto bacteria are transient bacteria, meaning they do not stay in the body permanently. They pass through the intestines and help balance gut flora, supporting overall health.
Natto bacteria are eventually excreted at the end of their life cycle. Therefore, it is important to consume them daily to maintain a healthy gut environment where beneficial bacteria can thrive.

Kyushu University Graduate School of Bioresource and Bioenvironmental Sciences
Kazuya Ogasawara | Academic Advisor at sonomono Inc.



We are dedicated to make products that truly support your well-being.
From November 15, 2020, to January 15, 2021, we conducted a study involving 205 adults in Kohoku Town, Saga Prefecture. The research examined how our unique natto bacteria, found in sonomono Natto Powder, positively impacts gut microbiota.
In collaboration with a research team, Sonomono published a peer-reviewed study in the international journal Nutrients in September 2022. The article highlights changes in gut microbiota after participants consumed sonomono Natto Powder capsules daily for two months, using data from a comprehensive Japanese microbiota analysis. The findings confirm the effectiveness of our natto bacteria in supporting gut health.
Our capsules are made from plant-based materials, offering a gentle, natural, and vegan-friendly supplement option for anyone looking to improve their health. Hydroxypropyl methylcellulose (HPMC) is the material used for these plant-based hard capsules, known for its high safety and widely recognized around the world.



At the Wellness Food Awards, organized by the Japan Wellness Food Promotion Association, which focuses on foods and food materials that improve quality of life (QOL), our natto was awarded the highest honor, the Gold Award, in the Immunity and Nutritional Balance category among over 200 entries.。

At the CJPF Award 2024, organized by the Cabinet Office’s Intellectual Property Strategy Promotion Office, our natto bacteria series, “Sonomono Natto” and “Kona Natto,” was recognized for its activities and achievements as a business that aligns with the Cool Japan strategy aimed at promoting Japan to the world, and we were awarded the Excellence Award in the Project category.



I heard about your products on NHK World TV, on a program about the benefits of natto. I tried your powder which I ordered through Amazon. However, I still found it a little difficult to eat due to the flavor and smell, so I wanted to have the powder in capsules. I look forward to trying your natto capsules. Thanks very much.
Natto capsules customer,
Hawaii
I spend time in Asia and have gotten to know Natto and also its benefits and I want to ensure I’m getting it every day. When I travel, it’s impossible. I spend time in Asia and have gotten to know Natto and also its benefits and I want to ensure I’m getting it every day. When I travel it’s impossible to have real Natto. So I searched for a product like yours and found it via Google.
Natto capsules customer,
HK
My family and I have been taking the natto every day (1 tablet) for a little over a month now.
We have all noticed a big difference in our gut health with less gas and bloating and finding it easier to go to the toilet. Some family members have noticed that their hormones have been more balanced since taking the Natto. We have all noticed a difference in the health and appearance of our skin. All very positive results and we are so happy to be able to use this product. We would give it 5 stars .
Natto capsules customer, Australia
After I finished the 30 trial tablets, I felt a refreshing sensation that I hadn’t felt for six years, and my body felt undull. I was surprised! I talked about sonomono natto capsules with my physician. He asked me to show them because he wanted to recommend them to other patients. I am planning to order it regularly and continue.
Natto capsules customer, US
Finally, I found it!
I’ve tried supplements for everything, but this is the first time I feel satisfied with one.
Natto powder capsules, Malaysia
大の納豆嫌いですが、1日2粒のむだけで、**も改善され肌の調子もよくなりいいこと沢山。産後の**で薬を処方してもらうか迷っていましたが、そのもの納豆のおかげで毎日快*です。旅行にも必ず持って行くくらい、手放せないものとなっています。ありがとうございます!
★★★★★
女性30代
生の納豆:とても嫌い
2023-07-03
私は納豆が嫌いです。でも体のためにも ダイエットのためにもいい納豆…。
どうにか納豆を食べようと頑張りましたが どうしてもご飯と一緒に食べることが出来ずに まず納豆だけ我慢して一気にかきこんで それからゆっくりごはんを食べる、というふうにしてみたのですが これもつらいー。
なので そのもの納豆をみつけた時には「マジ!?こんなのあったんだ!もう我慢して納豆食べなくていいんだ!」とやったーって感じでした。そのもの納豆サプリを飲めば納豆を食べたと同じ、ホットした感、安心感、満足感でとってもありがたく思っています!
★★★★★
女性60代
生の納豆:嫌い
2023-06-22
納豆パックは食べれないので、これまで一切とれなかった納豆の栄養がこの商品に出会えて摂れるようになりました。
毎年悩まされていた花粉の季節。
飲み始めて半年経っていましたが、気がついたら「あれ?鼻水も目のかゆみも出てない」。
毎月送られてくる便の色や形で腸の状態が分かるというブリストルスケールで、毎日自分でもチェックするようになり昨日食べたものやお酒の量などに気をつける習慣がつきました!
★★★★★
男性50代
生の納豆:とても嫌い
2023-11-12
20年来お酒の飲み過ぎでずっとお*の調子が悪かったのが無事に克服されました。
納豆自体の効果には注目していましたが、常食するには味と臭いが苦手だったので、まずはナットーキナーゼのサプリを試していましたが、市販の納豆ほどの効果は感じられませんでした。またスーパーの納豆では銘柄によっては効果がまちまちだったりしましたが、そのもの納豆は私の身体にマッチする品種のようで、助かりました。また、そのもの納豆の効果が出るのは早く、翌日には目に見えてお*の調子が良くなります。
既に数年間愛飲しており、人生で一番自信を持ってオススメできる素晴らしい商品です。
★★★★★
男性40代
生の納豆:嫌い
2023-12-21
関西の人間は、納豆を食べたことが少ないです。91歳の私はこちらへきてはじめて納豆を知りました。体に良いと思いますが、なじめませんでした。薬剤師の仕事をしていましたので、必要な食品だと思いますが、あの匂いが嫌いです。お宅の製品を知りましてすぐ定期で飲んでいます。**もしなくなりました。これからも生きている限り飲みますのでよろしくお願いいたします。
★★★★★
女性90代
生の納豆:とても嫌い
2023-07-29
まだ一袋目です。が……
*通がびっくりする程良くなりました。
実は納豆が全く食べれません。
でも腸活とイソフラボンの効能に期待絶大です。肌と髪のツヤツヤを目指して続けてみます
★★★★★
女性60代
生の納豆:とても嫌い
2023-11-27
毎日飲んでいます。
ほんのり納豆の香りがしますが、私は納豆好きなので、気になりません。
納豆好きでも、1日に納豆何パックと食べる事が出来ないので、重宝しています。
今度はこな納豆にチャレンジしてみたいと思います。
★★★★★
男性50代
生の納豆:とても好き
2023-10-05
「そのもの納豆」は毎晩、夕食後に3粒(お酒の量が多い時は、量に応じて4〜5粒程度)を飲んでいますので、毎朝快*で快調です。「ドライきくいも」は、硬さもちょうどよく、お酒のおつまみに良かったです。
★★★★★
男性70代
生の納豆:好き
2023-12-05
飲み始めて1年以上にもなるかと思います。
50代であちこち不調がでる世代に間違いないのですが、健康だけは取り柄と言えるほど、健やかに過ごしています!
適度な運動、お風呂、それからこのそのものの納豆、どれも私の健康維持に欠かせないと思っています!
★★★★★
男性50代
生の納豆:どちらでもない
2023-06-29
腸は免疫力を高める働きがあるので、大切に付き合っていかなければなりません。そのもの納豆はそれをサポートしてくれる、とても良いサプリメントです。
それと運動も大事だと思います。
この二つは日々の生活には欠かせません。
★★★★★
男性70代
生の納豆:どちらでもない
2023-09-25

Easy to understand and use



The packaging design has been carefully refined to minimize any negative associations with natto, such as its distinctive smell and appearance.

The package includes a zipper with a thoughtfully designed step, making it easy to open.


This product is completely additive-free, containing only pure natto. It retains all of natto’s natural nutrients while also providing a substantial amount of spore form natto bacteria, making it both highly functional and practical.
※No preservatives, thickeners, colorings, artificial sweeteners, etc. are used.

Our capsules are made with HPMC or Hydroxypropyl methylcellulose. HPMC is a plant-based, non-toxic, and biodegradable compound. It is well-tolerated by most individuals and does not irritate the digestive system. Unlike synthetic materials, HPMC is free from common allergens and harsh chemicals.

The shelf life of Sonomono natto powder capsules is two years from the date of manufacture when unopened. You can confidently purchase them in bulk or as a gift, knowing they maintain their quality over time.
For those who just can’t stand capsules



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This is a completely additive-free product made from 100% Fukuyutaka natto, sourced from Kohoku-cho, Saga Prefecture, and grown without the use of chemical pesticides or fertilizers. It is fermented with the original pure cultured “sonomono natto bacteria,” ensuring its authenticity and quality.
Natto (domestically produced non-GMO soybeans), natto bacteria, Hydroxypropyl methylcellulose (plant-based capsule)
30 caps/60 caps/90 caps
Per 3 capsules (1.38 g) – These values are approximate.
Energy: 6.28 kcal / Protein: 0.51 g / Fat: 0.26 g / Carbohydrates: 0.48 g / Sodium equivalent: 0.001 g
Take 3 capsules daily with water or lukewarm water.
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