Est. 1973 2:1 Ratio With Vitamin D-2 Bone Strength Muscle Support Dietary Supplement Lab Verified A Brighter Way Since 1973, we've scoured the globe for the highest quality ingredients, connecting you with the most efficacious supplements that help you live brighter and embrace the moments that matter most. Discussion : Calcium and magnesium are intended to provide nutritive support for healthy bones, teeth, muscle and nervous system function. The calcium and magnesium in this product are chelated to whole rice concentrate rather than ordinary soy, yeast, or milk proteins which are commonly used. Glutamic acid is added for enhanced mineral absorption. Vitamin D has been added to enhance absorption and utilization of calcium.