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R's KOSO is an American webshop selling a traditional Japanese postbiotic superfood drink made from over 100 fermented plant-based ingredients. The product is manufactured in Japan and positioned around gut health, weight management, and skin improvement.
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About R's KOSO
Free shipping from
$50 (U.S. orders)
Main product
Japanese postbiotic superfood drink (KOSO)
Product variants
R's KOSO, R's KOSO Lower Sugar, R's KOSO SHOT
Country of production
Japan
Key certifications
Vegan, Gluten-free, Non-GMO, Dairy-free
Ingredients
100+ fruits, vegetables, seaweeds, mushrooms
Customer service
[email protected] / +1 323 505 2841
Headquarters
Carson, California, United States
R's KOSO targets health-conscious consumers who are looking for a natural, food-based approach to gut health rather than conventional supplements. The shop operates in the premium wellness segment, with a product that draws on a century-old Japanese fermentation tradition and is manufactured by a factory with 70 years of experience. The drink combines prebiotics, probiotics, and postbiotics in a single formula that has undergone clinical testing for gut health improvement. The range includes a standard version, a lower sugar variant, and a shot format, alongside structured cleanse programs of three to five days.
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This is an example of a promotion that could suit this business. It is not a guaranteed active offer or a working discount code. Check the website for current deals.
To the shop
R's KOSO in the news
Recent updates and background about R's KOSO, summarised in our own words.
R's KOSO Japanese Postbiotic Drink now available in 474ml
The flagship R's KOSO postbiotic drink is available in a 474ml format and can be mixed with sparkling water for a plum-flavored soda. It is designed to support gut health, digestion, skin, and immune function.
R's KOSO Lower Sugar variant launched in 280ml format
A lower sugar version of the traditional KOSO drink is available in a 280ml bottle, offering the same century-old Japanese fermentation formula with reduced sugar content.
3-Day and 5-Day KOSO Cleanse programs explained on the blog
The R's KOSO blog covers structured cleanse programs, including a 3-day and a 5-day cleanse, with recipes, wellness tips, and guidance on incorporating KOSO into a daily health routine.
Summaries by Image Review based on publicly available sources and our own editing. External links may contain affiliate links.
What others ask about R's KOSO
Answers to the most common questions, based on search behaviour and our own research.
Is R's KOSO a reliable webshop?
R's KOSO is a registered business based in Carson, California, with a publicly listed address, phone number, and email address. The shop has collected 956 customer reviews and offers a rewards program and affiliate structure, which indicate an established operation.
Does R's KOSO ship for free?
R's KOSO offers free shipping on all U.S. orders over $50. Shipping conditions for international orders are not specified in the available information.
What is the return policy at R's KOSO?
R's KOSO publishes a refund policy on its website. For specific conditions and timeframes, consumers are advised to consult that policy directly or contact customer service at [email protected].
What does the KOSO cleanse involve?
R's KOSO offers structured cleanse programs, including a 3-day and a 5-day cleanse, described in detail on the brand's blog. These programs are centered around the KOSO drink and are intended to support gut health and digestion.
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