What are the differences between a fat burner and a fat blocker?

Absorption of fat: The fat blocker available as Alli ( branded rx xenical) is a medication that binds up 20-40% of fat ingested with the capsules - and does not allow the fat to ever be absorbed into the bloodstream ( which is where the side effects come from). Fat burners - are usually any product that has any compound with a stimulant effect - ie caffiene or other herbal forms - but these do not burn fat -.

None: May products that make these claims are sham products and some can be dangerous. Make to discuss any nutritional supplement with a physician as many "weight loss" products can be harmful.