Natural Factors - Dr. Murray's Zymactive Double Strength Proteolytic Enzymes - 90 Tablets Natural Factors Zymactive Proteolytic Enzymes provides a spectrum of protein-digesting enzymes useful in supporting proper digestive function as well as nutritional support for individuals experiencing inflammation or cancer. Zymactive is a unique enzyme complex that is more than twice as potent in protein digesting activity as the leading brand. Peptizyme SP, 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. Natural Factors priority is enhancing people's health. They offer more than 300 different formulas available exclusively at natural health stores. They are family-owned, Canadian-based business. They have produced and sold quality supplements to North Americans for more than 50 years. They grow their own herbs, organically and process them fresh from the fields. They test and standardize herbs for total quality control. Their science team includes medical doctors, naturopathic physicians, researchers and herbalists from around the world. They create new, condition-specific formulas that are clinically proven to work. Their laboratory facilities comply with Good Laboratory Practices and are among the finest in North America. They meet or exceed Canadian Government Good Manufacturing Practices (GMP) guidelines and all Health Canada and FDA regulatory requirements Factor Farms:A quality herbal product starts with the highest quality fresh organic plant material. The efficacy of herbal products has always been affected by growing conditions, harvesting, processing and storage.