Yoli YES is an appetite suppressant shake that has a plethora of high quality ingredients for a very reasonable price. As a foundation, it contains Purawhey™, which is a biologically active, minimally processed and non-denatured, hormone-free type of whey. Everything is all-natural in this drink – including stevia, which is a herb that naturally sweetens the taste. The whey, stevia and other hormone-free ingredients that make up this shake are indicative of a high quality product, which makes it worth the price, rather than paying less for a shake consisting of diluted proteins and artificial sweeteners. Yes, Yoli is a multi-level marketing product, but don’t be concerned – the extra money is not used to pay distributors, it goes directly into the quality of this great drink.