Help your body maintain bone development and muscle function with Jamieson Vitamins Ultra Strength Magnesium. A high-potency and highly absorbable magnesium supplement that contains three complex magnesium sources to provide ‘ultra strength’ when it comes to development and support throughout your body. Simply take two pills daily to experience the benefits of magnesium. Those who might be deficient in magnesium can experience symptoms throughout their bodies. But, those symptoms can be lessened by incorporating more magnesium into their diet (in the form of magnesium-rich foods or supplements).