Serrapeptase is an enzyme that is proteolytic and isolated from the bacteria that are not pathogen. The digestive tract of the Japanese silkworm is full of Serratia species and it uses this enzyme to digest the cocoons. For more than 3 decades, Serrapeptase has been the most popular nutritional supplement in Europe and Asia. These vegetarian capsules are made to provide you with the best absorption in the intestinal tract, it contains enteric-coated pure serrapeptase. Note: The unit of quantification of Best Serrapeptase is the activity level of the enzyme which is “Serratiopeptidase units”.