Gluten FreeNon-GMO LE Certified6 Hour Extended Release FormulaDietary Supplement Your body needs magnesium for more than 300 essential biochemical reactions, but most of us don't get enough magnesium from dietary sources alone. Extend-Release Magnesium is formulated with magnesium oxide for extended release and magnesium citrate for immediate absorption to provide more consistent results from this supplement. Extend-Release Magnesium Benefits Essential for more than 300 biochemical reactionsHelps supplement magnesium-deficient dietsSupports cardiovascular health, bone health & moreIncludes long-term absorption & rapid-uptake magnesium forms for more consistent results Magnesium when and where you need it most Life Extension customers have known about the health benefits of magnesium for years. Now, Life Extension offers Extend-Release Magnesium. Formulated with two kinds of magnesium, Extend-Release Magnesium is optimized for both immediate and prolonged dissolution and uptake. Extend-Release Magnesium ensures you get the maximum health benefits magnesium can provide, making it our most advanced magnesium supplement ever. Cardiovascular health Magnesium relaxes the smooth muscles within the blood vessels, promoting cardiovascular health. Magnesium also promotes the synthesis of serotonin and nitric oxide.  Bone health Magnesium positively influences the bone mineral matrix and its ability to metabolize minerals needed for optimal bone health. Scientific literature documents the need for a number of minerals, including calcium and magnesium, to help maintain strong, healthy bones. Whole body health Dietary magnesium also improves metabolic profile, beneficially impacts insulin resistance and serum lipid profiles, promotes a healthy inflammatory response, supports healthy endothelial function and protects against oxidative stress.