R's KOSO, Inc. (rskoso.com) has a 4.7 out of 5 rating on OK.one, based on 24 user reviews collected here. It is listed under Food, Beverages & Tobacco and its reputation is excellent. Praise is nearly unanimous, with 91% rating it 4 stars or higher; The business has not yet replied to negative reviews; 3 of them were added in the last 12 months. Last updated 2026-08-10.
R’s Koso does a wonderful job with customer service. They are attentive and they ship everything so beautifully! My product came packaged in a high quality box in Perfect condition! Would make a wonderful gift to any health conscious people looking to try something new! The flavor of the beverage is sweeter and tastes like plum wine! Very tasty and I like combining mine with sparkling water and having it in the morning before going into work.
Tastes good, and work well for me, I love it!
Fantastic healthy drink Koso! I've tried Koso Cleanse it was fantastic result about gut helath and digestion. I've done 3-Day Cleanse with R's KOSO. I heard about that is Japanese Juice Clease. I lost 6 lbs and felt much better than before. I recommend mixing with sparkling water it was the best choice to consume.
I used to drink Koso enzyme in Japan and very happy to have it in the US. It helps me to control weight and skin beauty. I always drink it when I eat too much or hangover. Love the taste! Sour-sweet like a fruit juice. I’ll definitely keep drinking it for my health.
24 reviews matching