SciFit's 100% Soy Isolate is aspartame free, mixes instantly with a spoon and is excellent for baking. SciFit's 100% Soy Isolate is available in Plain, Chocolate, Vanilla and Strawberry flavors in a convenient Single Serving, 20 serving, 32 serving and 40 serving sizes. 1. Physicians' Desk Reference for Nutritional Supplements, p420 2. PDR, p420 3. PDR, p420