Natural Factors Manganese Chelate - 25 mg - Critical for energy production, minute quantities of Manganese are required to be available at all times for protein and fat metabolism, the maintenance of healthy nerves, a healthy immune system, and proper blood sugar regulation. Also important for the formation of cartilage, bone formation, and the production of the lubricating fluid essential for healthy joints, maintaining adequate levels of Manganese in the body is very important. The chelated form of manganese allows the mineral to be more readily absorbed and metabolized by the body, making it an ideal choice for those with low stomach acid or other digestive issues.