Zymactive is a unique enzyme complex that is more than twice as potent in protein digesting activity as the leading brand. PeptizymeSP, a proprietary enzyme referred to as the silk worm enzyme has a more powerful and broader pH stability than chymotrypsin and trypsin. It has been used in Europe and Japan for more than 25 years for inflammation, post-surgical swelling, carpal tunnel syndrome, and ear, nose, and throat disorders, with good clinical research behind it.