Give Your Digestive System A Comprehensive Boost. Go with a nature-inspired solution to help balance your belly. GNC Natural Brand™ Super Digestive Enzymes are formulated with n•zimes ® proprietary enzyme blend to promote protein, carbohydrate and fat digestion. Promotes Protein Digestion. Protein is a key nutrient and crucial to supporting your muscles. Every serving of GNC Natural Brand™ Super Digestive Enzymes promotes protein digestion to help you get the most out of your diet or protein powders. Plus—if you normally don’t do dairy—every serving also features lipase, which helps digest dairy fat and milk proteins. Promotes Carb And Fat Digestion. Cautious with carbs? The benefits don’t stop with protein: GNC Natural Brand™ Super Digestive Enzymes also promote carbohydrate and fat digestion.