I first started buying carb blockers when they were on offer in Boots but at the cheapest they were still £17!!! These have more capsules AND are cheaper but contain the exact same amount of the extract in each capsule. They really do work to stop you absorbing carbs. I started using them because I got a bad cough which meant I couldn't go to the gym for a while and these did not only stop me gaining weight but made me lose more. Using them with exercise as well I can only assume must produce great results. I would definitely recommend this product.