I'm not sure what besides this product being liquid makes it a "smoothie." Then again, what is a smoothie, anyways? Eh, in any case, these drinks, at 80 calories per 7oz bottle are little more than drinkable yogurt. No frozen bits which make me think "smoothie," but it still has a smoothie kind of feel. Yes it is tasty and instead of aspartame, it uses Splenda. There's 5g of protein in the whole thing which is 10% of your daily consumption (based on a 2000 calorie diet of course)--not too shabby for 7oz of liquid yogurt. Too bad there's only about three swallows in the whole thing.