Indigo-3G® cyanidin 3-glucoside (C3G) is a naturally occurring anthocyanin (flavonoid) with many researched-backed benefits for leanness and health. C3G shrinks fat cells and limits fat storage while increasing and enhancing calorie-burning brown adipose tissue.* C3G profoundly enhances glucose uptake in muscle fibers instead of being stored as fat.* It even mimics the life-extension effects seen in calorie-restricted diets.* All of these effects and many more make C3G an essential supplement.