Magnesium Phosphate Tribasic Pentahydrate USP Powder can be used as a dietary ingredient and as a nutrient. This product is known to be used in pharmaceuticals. Magnesium plays a vital role in regulating the neuromuscular activity of the heart, converts blood sugar to energy and is necessary for proper calcium and Vitamin C metabolism. The product is primarily intended to be used as raw material in foods and pharmaceuticals and corresponds to the latest editions of the U.S Pharmacopeial monograph.