Never! We're obsessive about taste and quality, and our Protein Creamers went through hundreds of iterations to get them just right, so any off-putting aftertaste was out of the question. Our mission was to create good-for-you creamers that could truly stand up against coffeehouse-quality beverages. We went to great lengths to source the purest and highest quality organic monk fruit and organic erythritol available to ensure that you never experience the bitter aftertaste often associated with lower quality sweeteners. While many sugar-free creamers leave an off-putting chemical aftertaste that tastes anything but natural, Epic Grounds Protein Creamers are naturally delicious and naturally sweet with absolutely no bitter aftertaste.