Doctor's Best Natto-Serra - Nattokinase + Serrapeptase Mix is an excellent dietary supplement in capsules containing Nattokinase and Serrapeptase.

Serrapeptase is a protein-digesting enzyme isolated from the friendly bacterium Serratia E-15, which was discovered in the Japanese silkworm. Nattokinase is derived from "natto," a fermented soybean food that has been popular in Japan for centuries.

This Nattokinase is free from vitamin K. Serrapeptase is formulated with Serrateric, a superior alternative to enteric coating that protects the enzyme until it reaches the intestine for optimal absorption.