Thank you
The best thing I ever tried. Love it I have been taking it everyday since September this year.
By Ana B.
Saturday, November 7, 2026 · Customer reviews of US businesses

The Fair Hearing score
Excellent
22 reviews
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Japanese Prebiotic Superfood Drink & Cleanse. KOSO is Made from 100+ fruits & veggies. Koso Cleanse is The Leading Way To Improve Your Gut Health.🇯🇵🇺🇸
R's KOSO, Inc. (rskoso.com) has 22 customer reviews on The Fair Hearing, with an average rating of 4.6 out of 5.
Showing 18 reviews with 5 stars · Clear filters
The best thing I ever tried. Love it I have been taking it everyday since September this year.
By Ana B.
I love this product and drink it every morning. What's impressive is that it's delicious and very healthy.
By Karin G.
I have been into R’s Koso since January 2021 and taking it as my daily breakfast replacement. I have done 3 days cleansing schedule too and it is effective on loosing weight, improving gut health. However this product is on expensive side, hence I may want to take a break time to time in the Koso subscription to match up my budget.
By Nivedita P.
It tastes amazing and it is so nutritious! Even my kids love it. We all drink it in the morning. It works well for our guts.
By Satomi
Great product! Tastes amazing with sparkling water as a breakfast replacement or for a full day cleanse. Highly recommend!
By Georgia C.
Quick, efficient delivery of delicious KOSO drink. My stomach has never felt more healthy.
By MM
It works. Keeps me regular and reduces bloating.
By Veronique
I am a second year cancer survivor and needed to get my gut back to normal. I saw and review the information from the website and had to try it. All I can say is wow! I felt on day 3 having energy! When I are, I didn’t feel so full, couldn’t move for the rest of the day. I would eat, full full, have energy, start workout and moving again. The price is what stopped me at first but totally worth every penny to be able to move and have energy again I hope this company stay in busy and help anyone with digestion issue. Thank you!!
By Stacy