If you’re looking for a safe, natural substitute to sugar, than Stevia is what you need. NOW produces several versions of no-calorie stevia, including stevia liquid (flavors such as chocolate or hazelnut and unflavored), powder, and even French-vanilla flavored packets.
Unlike chemical sweeteners with side effects and possible long-term issues, stevia has been shown to actually have positive long term effects, such as battling high blood pressure and diabetes.
I will warn you that stevia has an aftertaste similar to artificial sweeteners (even though it is all-natural). So you may need to get used to this. When combined with real sugar, the aftertaste is minimized. For a better yet different tasting product, check out Sweet & Slender.

