Enzyme and Antioxidant Formula in a Delayed-Release Capsule. Serrapeptase is a naturally occurring proteolytic enzyme that was originally derived from the intestine of the silkworm, now specially manufactured in a laboratory for both vegetarian and vegan suitability. Blockbuster® All Clear combines Serrapeptase and Nattokinase, with digestive enzymes, antioxidants (Grapeseed Extract and Pine Bark Extract 95%), and much more. Blockbuster® All Clear is available in a delayed-release capsule to ensure the enzymes reach the intestinal tract for absorption at full strength, best taken on an empty stomach.