Like "I have not seen anything that is a premix kind of situation. Stevia is available in many forms. Most grocery stores are carrying Truvia and Pruvia. They have a texture more like sugar and they are sold in individual serving packets. In the organic or healthfood aisle of some grocers you will find a more pure stevia product like Sweet Leaf. That is more of a powder and is harder to disolve in liquid, but it is good to cook with. So for convenience, there is no ready made mix. But he could use a koolaid without sugar and then add the stevia and you have a better for you drink."