Absolute Nutrition FBlock Xtra

Rated 5.00 out of 5 based on 9 customer ratings
9 Reviews
(10 customer reviews)


Absolute Nutrition FBlock’s ingredient chitosan is unsurpassed in its quality and purity. FBlock’s chitosan goes through a process called deacetylation, which refers to the removal of acetyl groups.

In stock

SKU: 708235088533

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SKU: 708235088533
  • Potent Fat Blocker
  • Stimulant Free
  • Stack With Your Favorite Fat Burner

Have you heard of Chitosan? A well-known fat blocker, it’s a marine fiber that attaches to the fat in the food you eat and prevents it from being stored as body fat.

While there are actually a lot of choices when it comes to a Chitosan product, only a very few contain pure, premium quality Chitosan.

FBlock Xtra by Absolute Nutrition is unmatched in purity and quality. FBlock contains 1 gram of pure Chitosan per serving, and undergoes an exclusive manufacturing process that enhances Chitosan’s effectiveness.

We don’t stop there – we’ve added Lipase, a digestive enzyme that acts as a fat emulsifier, increasing the fat absorption ability of FBlock. We’ve also included Calcium and Vitamin C, which aids in the absorption of Chitosan


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 pregnant or nursing.

Supplement Facts

45 servings per container
Serving size
2 Capsules
Amount Per Serving
% Daily Value
Vitamin C (as Ascorbic Acid)
100 mg
Calcium (as Calcium sulfate)
43.5 mg
1000 mg
Lipase Complex
30 mg
Microcrystalline Cellucose
100 mg

Percent Daily Values are based on a 2,000 calorie diet.

Other Ingredients:

Gelatin, Magnesium stearate, Silicon dioxide
Contains: Shellfish (shrimp, crab and/or lobster)

Global Disclaimer

Manufacturers continually change product specifications, descriptions and ingredients. While we try our best to keep all product information up to date, it may not reflect the latest information available from the manufacturer. Product packaging may contain different or additional information, including the product description, nutritional facts, ingredients, allergens and other information. Always read labels, warnings, and directions and other information provided with the product before using or consuming a product. Information and statements regarding dietary supplements have not been evaluated by the Food and Drug Administration and are not intended to diagnose, treat, cure, or prevent any disease or health condition. For additional information about a product, please contact the manufacturer.

As part of a diet and exercise program, to achieve results, take 2 capsules 1/2 hour prior to meals with a full 8oz. glass of water.

Additional information

Weight 4.5 oz
Dimensions 2.5 × 2.5 × 4.5 in

10 reviews for Absolute Nutrition FBlock Xtra

  1. Rated 5 out of 5
    9 Reviews


    I knew I needed to do something when I was forced to disembark from an airplane! I was over 400lbs at the time and i couldn’t even fit in the seat with the seatbelt extender. I had let myself go. Thats when I discovered F block. Now its a year later and Im at 290lb! Granted i had to change my eating habits but F block was a big help in my transformation. Im glad I decided to start taking it.

  2. Rated 5 out of 5
    9 Reviews



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