We would like to inform you that Magnesium glycinate is indeed a highly bioavailable form, especially useful at therapeutic doses for correcting deficiency. However, our multivitamin is designed for daily RDA-level maintenance, not deficiency treatment. Magnesium oxide contains 60% elemental magnesium, whereas magnesium glycinate contains 14–20%. To deliver the same elemental magnesium using glycinate, significantly higher material volume would be required. In a multi-nutrient tablet where space is limited, this would substantially increase tablet size and disrupt overall nutrient balance.
Magnesium oxide is also highly stable, less hygroscopic, and technically well-suited for complex multi-ingredient formulations. Its inclusion is a formulation decision based on elemental density, stability, and matrix compatibility.
For individuals seeking therapeutic magnesium support, a standalone magnesium glycinate supplement alongside a multivitamin would be more appropriate.