ProKey is a new drink made from water Kefir, is probiotic and low-calorie. A prebiotic drink provides beneficial microorganisms to our digestive system, in the same way that the yogurt. The manufacturing process is the metabolization by living organisms of sugars and fruit juice components, the result of this process are various beneficial organic acids such as lactic acid, malic acid or acetic. The final product is a ULTRA HEALTHY drink with a slightly sweet, sour and very refreshing taste.