What Is The Best Carb And Fat Blocker . A carb blocker is a supplement that slows down or prevents the absorption of carbohydrates into your body. Learn how and when to use these supplements and medications for weight loss in this guide. If you've already started your search for the best fat and carb blockers, you will know that there are many types of carb and fat blocker pills and supplements in the market and it can be tough. Two of the best carb blockers getting attention right now include meratol and proactol. Do fat blockers and carb blockers actually help with weight loss? There's where supplements that block fat come into play. Blocking carbohydrates and fats from food is a great way to slim down and prevent weight gain. A quick answer to the main question made in the subheading would be not at all allow us to explain why a basic explanation of what is meratol would be to define it as a weight loss supplement to help anybody manage their appetite and bo...