CanPrev: Magnesium Bis-Glycinate 300mg Liquid, 500ml bottleCanPrevs Magnesium Bis Glycinate 300 Ultra Gentle liquid contains as much as 20% more elemental magnesium than other magnesium supplements. It works to restore magnesium to optimum levels and help fuel all the important functions its called on to perform. Magnesium Bis Glycinate 300 Ultra Gentle offers a potent, therapeutic dose of 300mg of pure elemental magnesium in a form known for its superior absorption and gentleness on the bowels all that