I was in Tesco and saw Chocologic brand dark chocolate with 18.7 percent carbs - no added sugar. I tried it out at once and it isn't bad - 55 percent cocoa solids. The 80 gm bar is 15 gm of carb, but I was cautious and have eaten a small amount - there must be some reason for the small serving size printed on the package. I remember eating a bar with sugar alcohols in it which was as good a laxative as Metformin, but with extra wind. Has anyone tried this and were there any side effects from the polyols/sugar alcohols? The high cocoa bars are rather sharp for my taste, and they are higher carbs than these bars so I am hoping that they don't cause disruptions.