Purchased in October 2024. Selling because my cat's preferences have changed. For cats who care about their kidneys ❀ ☆ 100% uses Tamba natto beans cultivated by farmers in Tamba City, who do not use pesticides or chemical fertilizers, in the rich nature of Tamba. ☆ Concanavalin A, contained in natto bean tea, restores the kidney's "filtration function." It used to be said that kidney function, once lost, would never return. However, in recent years, this theory has been overturned, and it has been discovered that a substance called "Concanavalin A" repairs the kidney's "filtration function." Concanavalin A is very abundant in "natto beans," so consuming natto beans can restore kidney function. In fact, it has been clinically proven that people suffering from chronic kidney disease showed improvement in their symptoms after consuming natto beans for 3 consecutive months.