Our Calcium Magnesium formula provides you with 1000 mg of calcium carbonate and 500 mg of magnesium oxide per tablet. Calcium and magnesium help in proper bone mineralization, and nerve impulses.? For additional formula information, view the Supplement Facts panel. All Windmill supplements are manufactured in the United States in an FDA-inspected facility whose GMPs (Good Manufacturing Practices) are independently verified by qualified certification organizations.Windmill is a trusted name that has been providing America with quality supplements for over 40 years.
