Manganese is a trace mineral that is essential for metabolism and antioxidant defense. Swanson Albion Chelated Manganese supplement provides a highly bioavailable form of this important nutrient. Manganese is a little-known yet important dietary mineral. It's important for proper growth and health maintenance throughout life. Manganese functions as a coenzyme to facilitate digestion and utilization of carbohydrates, fats and proteins. It also has roles in bone formation and muscular health. Manganese is also important for optimum functioning of SOD (superoxide dismutase), one of the body's primary antioxidant enzymes.