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















◎ Product information・Ingredients
| Ingredients | Natto ( no-GMO Japanese soybeans, and natto bacteria), ※HPMC |
| Best-by date | Printed on the back of package (2 years unopened from manufacturing date) |
| Directions of use | Take 3 tablets daily with cold or lukewarm water. |


Many people wonder: What is natto, and why is it good for health? Sonomono natto powder capsules are a natural health supplement made of 100% pure natto and “sonomono natto bacteria.” We solely utilize non-GMO Japanese soybeans cultivated without chemical pesticides and chemical fertilizers in all our products. Our exclusive freezing-drying and powdering processes allow the efficient intake of natto nutrients and probiotics.
Sonomono natto capsules are ideal for people who have tried food or supplements with lactic acid bacteria and do not feel satisfied with the results. Highly recommended if you have an irregular diet and require an effective method to support your health. *A novel study of 205 people revealed that the daily consumption of sonomono natto powder increased the number of bifidobacteria and lactic acid bacteria in the intestine.
※A study conducted between 2020 and 2021 scientifically proved that the intake of natto powder that contains “sonomono natto bacteria” supports the increase of bifidobacteria and lactic acid bacteria in the intestines. The researchers reached this conclusion after analyzing the genetic material of intestinal bacteria contained in the fecal samples of 205 participants.

The usual shipping cost is 250 yen (tax included) nationwide.
Free shipping within Japan for all products of regular subscriptions.
Free shipping on orders over 10,800 yen (tax included)!
All orders are delivered 3 to 7 days after confirmation by Yamato Transport Nekopost or Japan Post Yu-Packet ( notice that both are delivered directly to your mailbox).
Returns ・Cancellations
Notation based on the Specified Commercial Transaction Law
▼ Quantity can be changed after adding to cart.

30 caps
(Trial order)
10% OFF if you buy 3 bags or more!
1 bag 2,430yen (tax included)

60 caps
(about 2 caps/day)
10% OFF if you buy 3 bags or more!
1 bag 4,536yen (tax included)
15% OFF monthly and free shipping!
1 bag monthly 3,856yen (tax included)

90 caps
(about 3 caps/day)
10% OFF if you buy 3 bags or more!
1 bag 5,832yen (tax included)
15% OFF monthly and free shipping!
1 bag monthly 4,957yen (tax included)
A natural health supplement
sonomono-natto

Many people wonder, what are the health benefits of natto? The key to reinforcing the barrier power is improving intestinal activity. The increase of good bacteria improves the intestinal environment. A recent discovery points out that more than 60% of the immune cells reside in the intestine. Those cells’ function is to protect us from viruses and other nocive organisms. Maintaining a healthy intestinal environment leads to an increase in barrier power. Natto is an optimal food for intestinal health; it contains billions of Bacillus subtilis or “natto bacteria” that help to normalize the intestinal environment. The main difference between natto powder and other fermented food is that it contains natto bacteria in spore form. A spore is a natural cell structure that confers resistance to heat and dryness. Thanks to its spore, B. subtilis can pass through the gastric acid and reach the intestines unharmed.
Once in the intestines, B. subtilis assist digestion, absorption of nutrients, and stimulate the immune system. It also helps other beneficial bacteria in the intestines to proliferate and improve the intestinal environment. When the amount of good bacteria exceeds the harmful bacteria, the microbiota enters into balance and the digestive and immune systems can perform their functions properly.

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According to several estimations, more than 1000 types of intestinal bacteria coexist in our intestines, ranging from 600 to 1000 trillion. The ideal proportion between good and harmful bacteria is 2:1, which means 20% of the intestinal space could be occupied by good bacteria, and 10% by harmful bacteria. The remaining 70% f the intestinal space is occupied by opportunistic bacteria that can support the growth of either good or bad bacteria. If the population of intestinal good bacteria is greater than bad bacteria, thence the opportunistic bacteria will side with the good bacteria. For this reason, it is essential to maintain the 2:1 proportion.
What’s sonomono natto?
Bacillus subtilis grow naturally on rice straws. One of its survival mechanisms in hostile environments is forming spores. A spore is a resistant shell able to stand hot water at 100 degrees for more than 10 minutes, and survive in vacuum and acid environments. This natural shield allows B. subtilis to pass through the gastric acid and reach the intestines alive.
Compared to regular natto packed in styrofoam, natto powder contains B. subtilis in spore form. The vegetable capsule adds extra protection and convenience; take it everywhere, any time!

In babies, the gut is initially filled with Bifidobacteria shortly after birth, but as they begin to eat solid food, the composition of gut bacteria changes. Furthermore, it’s not uncommon for the balance of gut bacteria to shift dramatically in people aged 40 and older, with an increase in harmful bacteria and a decrease in Bifidobacteria.
Various gut bacteria coexist and support each other within the gut. In recent years, there has been growing emphasis on the idea that having a diverse range of bacteria in the gut is beneficial, so it’s important to strive for a balanced diet that includes a variety of foods.
※From 2020 to 2021, we conducted a study monitoring the gut microbiota of 205 participants who consumed freeze-dried powder capsules containing natto bacteria (Sonomono natto bacteria, Bacillus subtilis var. natto SONOMONO) over two months. Analysis was conducted using the SYMGRAM® gut microbiota test kit for healthcare institutions, operated by Symbiosis Solutions Co., Ltd.




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Soy is an excellent protein source. It has an outstanding amino acid score of 100 points, placing it on the same level as pork meat and tuna. Soy contains all nine essential amino acids that our body needs to make proteins. Natto is made by fermenting soybeans. Therefore, it includes all soy’s high-quality proteins and unique ingredients such as nattokinase, polyglutamic acid, and vitamin K2. Another beneficial effect of fermentation is that the nutrients’ absorption rate also increases
The freeze-drying process preserves all natto nutrients, allowing their efficient intake. Use sonomono natto powder to enjoy natto’s exceptional nutrition and support health and beauty in a well-balanced manner.
Sonomono® natto powder capsules are suitable for people who dislike natto smell and stickiness, have an irregular diet, or want a natural supplement to support their health.
The capsule adds protection to natto nutrients that are vulnerable to stomach acid, making it the most efficient way to supply your body with all the natto benefits.


The safety of our clients is our top priority. We exclusively use soybeans from the Organic Research Group in Kohoku Town, Saga Prefecture. This farmers’ association cultivates a native variety known as Fukuyutaka, famous for its fluffy grains and high nutrient content. * The soybean production area may change due to natural disasters.

Making Japanese natto is an art and science. The ingredients are simple: soy, water, and bacteria. However, it requires time-tested techniques and experienced hands to achieve the great flavor that makes our natto powder famous all over Japan.
Reliable process that preserves natto probiotics and nutrients.

We use selected soybeans, rich in high-quality proteins and fatty acids that provide comprehensive nutrition for your body.

The fermentation produces enzymes and other substances unique to natto. It also increments soy nutrients and their absorption rate.

Freeze-drying is a process that removes natto’s moisture by applying vaccum and ultra-low temperatures. It preserves the soy nutrients and induces the formation of spore bacteria.

After grinding the freeze-dried natto, the last step is encapsulating the powder. The vegetable capsules preserve the contents intact without relying on preservatives.

| Product name | Soybeans processed food |
| Ingredients | Natto ( no-GMO Japanese soybeans, and natto bacteria), HPMC※ |
| Contents | 12.45g (415mg x 30 tablets) / 24.90g (60 tablets, 30 tablets x 2 bags) / 37.35g (415mg x 90 tablets) |
| GTIN / JAN | 30 capsules:4573114540022 90 capsules:4573114540015 |
| Nutritional information | Nutritional Information per 3 tablets (1245mg) *Estimated values based on sample analysis. Energy 5.90kcal / Protein 0.49g / Fat 0.25g / Carbohydrate 0.43g / Salt equivalent 0.001g |
| Best-by date | Printed on the back of package (2 years unopened from manufacturing date) |
| Storage instructions | Store away from direct sunlight, high temperature and humidity. |
| Directions of use | Take 3 tablets daily with cold or lukewarm water. |
Please be aware of the following:
Remember to maintain a balanced diet with staples,
main dishes, and side dishes.
* These testimonials express individual opinions and may vary according to the experience of each user.
Wu/Taiwan NEW
Hello everyone, I’d like to share my personal experience with sonomono Inc. They recently launched an innovative portable natto product, which is incredibly convenient. We all know natto is rich in nutrients, but its strong smell and storage challenges have made it difficult to enjoy outside Japan. As someone who travels as frequently as others ride bicycles, I was immediately thrilled when I saw sonomono Inc’s natto products and felt a deep sense of gratitude.
I ended up purchasing almost all of their natto-based products, including the crackers. At this moment, I’m also enjoying their mulberry leaf tea powder—it’s my first time trying it, and it definitely meets my expectations.
Being a foreigner, sonomono Inc assigned me a customer service representative named Giovanny Paiz. Initially, I simply admired sonomono Inc’s products, but I want to express my appreciation for Giovanny Paiz. Not only did he display the thoughtful service attitude I associate with Japanese culture, but I also discovered through our interactions that he has genuine empathy, always thinking of solutions for his customers.
In other words, Giovanny Paiz promptly solved my problem by proposing better options. His proactive attitude truly stood out and turned my admiration for sonomono Inc.’s products into an even deeper appreciation for their excellent customer service. Since I don’t have a direct channel to reach the higher management at sonomono Inc., I decided to take this opportunity to share my experience.
I want to let other consumers and the company know that sonomono Inc.’s products are exceptional and have touched my heart. But the outstanding service provided by Giovanny Paiz may very well be one of the main reasons I look forward to purchasing from them again. Thank you so much, sonomono Inc., for assigning Giovanny Paiz as my customer service representative, and I sincerely hope the company will commend or reward him! I am truly grateful.
With Gratitude
K.K./Australia
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 .
This product surprised me!
After I finished the 30 trial tablets, I felt a refreshing sensation that I hadn’t felt for six years, and my body stopped feeling dull. 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. (51 years old, male)
Finally, I found it!
I’ve tried supplements for everything, but this is the first time I feel satisfied with one.
(70 years old, female)
Try it for a week …
It’s been about a week since I started taking it. Even the smell of my flatulence is different. I heard that stinky stomach gas results from too much harmful bacteria in the intestines, so if mine is changed, it means something good is happening inside. I haven’t found a supplement that I would like to continue using, but maybe I will stick to this one.
* These testimonials express individual opinions and may vary according to the experience of each user.

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