XLS-Medical Carb Blocker Tablets XLS-Medical Carb Blocker Tablets are clinically proven to help reduce the calories absorbed from dietary carbohydrates, making them ideal for people with a carb-rich diet.XLS-Medical Carb Blocker Tablets contain the active ingredient Phase Lite which reduces the break down of carbohydrates meaning they are too large to be absorbed by the intestine. These carbohydrates are left undigested & are excreted naturally.XLS-Medical Carb Blocker Tablets don't interfere with your body's natural workings so are gentle on your system & as Phase Lite comes from an organic plant source it is naturally well tolerated. They are a certified Medical Device which means they have been tested for both safety & efficacy.XLS-Medical Carb Blocker Tablets contain no added artificial colourings, flavourings, salt or preservatives & are free from ingredients of animal origin.