Fat Absorber Diet Formula F Block by Absolute Nutrition is a superior fat absorber Chitosan is a marine fiber that really does the job of absorbing fat. There are plenty of chitosan products out there, but only a handful contain the purest of pure chitosan. 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. Also Available: C Block F Block C Block = Dynamic Duo F Block C Block NoPhedra = LipoSlim System F BlockAbsolute Nutrition Serving Size - 2 tablets Servings Per Container - 45 % Daily Value Vitamin C - 100mg as ascorbic acid 167% Chitosan - 1000mg marine fiber concentrate Lipase - 300LU Calcium Sulfate - 150mg Vegetable Cellulose - 100mg Ingredients: gelatin, vegetable magnesium stearate and silica. Daily Value not established.