Dr. Houston's Highest Quality Enzymes Enzymes for Polyphenol Digestion Supports Digestion of Food High in Polyphenols Enhances Breakdown of Fruit and Vegetable Fiber Dietary Supplement The Authority on Enzymes All Vegetarian No-Fenol may be helpful for digestion of those foods high in polyphenols. Digestion of fruits and vegetables may also be enhanced as No-Fenols includes enzymes that break down the components of plant fibers. No-Fenol was developed by Dr. Devin Houston, PhD, Enzyme Biochemist