If you train hard then this handy powder from Swanson Health will support your body in a number of ways. Magnesium Ascorbate, a buffered form of Vitamin C, supports a healthy immune system, particularly post-exercise, as well as energy metabolism, reducing tiredness and fatigue, and protecting your body from oxidative stress. Each serving is packed with 830mg of vitamin C and 65mg of magnesium. If you train hard then this handy powder from Swanson Health will support your body in a number of ways. Magnesium Ascorbate, a buffered form of Vitamin C, supports a healthy immune system, particularly post-exercise, and protects your body from oxidative stress. Each serving is packed with 830mg of vitamin C and 65mg of magnesium. 830mg of vitamin C. 65mg of magnesium per serving. Supports energy metabolism and reduces fatigue. Maintain healthy muscles and healthy bones. Contributes to electrolyte balance. Suitable for vegetarians. Available in a 133g tub The magnesium also plays a number of key roles in the body, not only supporting energy metabolism and reducing tiredness and fatigue, but also maintaining healthy muscles, bones and electrolyte balance. Buffered Magnesium Ascorbate and Vitamin C powder helps reduce tiredness and fatigue. Read more about it.