Gaspari Nutrition Proven Grass fed Beef Liver Protein supplement is also advertised as being rich in amino acids, including essential ones such as BCAAs. 

Proven Grassfed Beef Liver is marketed towards bodybuilders who are looking to support muscle growth and recovery, and may find the protein profile of this product to be beneficial in achieving their goals. The addition of digestive enzymes is also highlighted as a feature that may aid in absorption and utilization of the protein.

Overall, Gaspari Nutrition Proven Grassfed Beef Liver Protein offers a unique option for those seeking a high-quality protein source with potential added benefits from grass-fed beef liver.

Supplement Facts
Serving size: 4 Capsules
Servings per container: 30
 Amount per serving    % Daily Value
Grass Fed Desiccated Liver (Bovine)    3000 mg    “
BioPerine® (Piper Nigrum (fruit) Extract 95% Piperine)    5 mg    “

Other Ingredients: Capsule (Gelatin), Rice Flour
“ Daily values not established.