F Block's chitosan ingredient is unsurpassed in it's quality and purity. F Block's chitosan goes through a process called deacetylation, which referes to the removal of acetyl groups. This is a process that increases the solubility of the chitosan fiber.

But there's more. The digestive enzyme lipase is added to the F Block formula to help in emulsifying the fats that you ingest, making it a superior fat absorber. That's why it's called F Block Xtra. F Block is also fortified with calcium and vitamin C. The vitamin C aids in boosting the effectiveness of chitosan and the calcium is for healthy bones. Try some and start blocking fat today!

Suggested Use: As part of a diet and exercise program, to achieve results, take 2 capsules + hour prior to meals with a full 8 ounce glass of water.

Note: This product is derived from shellfish. If you are allergic or sensitive to shellfish, you should avoid this product. Any fat soluble vitamins (A, D, E & K), medications, or fatty acids should be taken at least 4 hours before or after ingestion of this product and should not be used by women that are pregnant or nursing.