It depends on how sweet you like it. I has natural sugars and that's enough sweetness for some people. I find certain flavors like Tropical orange and Fruit Punch need more sweetening so I add a little spenda or stevia. You can have it pre-added, but it will be VERY sweet -- however, the nice thing is that it still tastes natural. Whenever something uses all artificial sweeteners in excess it's gross. You need SOME real sugar.