We use Sucralose to add a little sweetness. It comes from natural sugar cane but is 600 times sweeter than sugar (so we only need a tiny amount). It has zero calories, doesn’t spike your blood sugar, is naturally excreted from your body without absorption, and has been approved as food safe around the world for decades. When you read the actual research papers (not the media & "health guru" hype), it's perfectly safe and used as per the FDA recommended value of 50-60mg per serving. But you can always choose our “Unflavoured / Unsweetened” option if you desire.