About this item Liquid Calcium Magnesium supplement contains cholecalciferol (vitamin D3) and boron for additional support Each tablespoon provides 500 mg of calcium and magnesium in absorbable citrate form Xylitol-free. Does not contain vitamin K. 1:1 ratio of calcium to magnesium for proper absorption* No sugar, salt, yeast, wheat, soy, dairy products or artificial colors or flavors. Gluten free