Taste, Reimagined. Quest flavored Protein Powder is a tasty, decadent blend. Even when it’s simply mixed with water. We’ve transformed high quality protein into impossibly delicious flavors that are distinctly Quest.Ingredients Protein blend (whey protein isolate, micellar casein). Contains less than 2% of the following sunflower lecithin, xanthan gum, cellulose gum.Free From Milk-derived ingredients.