300mg of pure elemental magnesium per dose. Magnesium plays key roles in 800 different chemical reactions in the body from DNA synthesis to alleviating constipation. But unfortunately, it’s one of the most common mineral deficiency. From reduced consumption of magnesium in our diets to medications that hinder our ability to absorb magnesium. With CanPrev’s Magnesium Bis-Glycinate 300 Ultra Gentle you get as much as 20% more elemental magnesium compared to other magnesium supplements. Working to restores magnesium to an optimum level with superior gentle absorption that is easy on the bowels.