Support The Maintenance Of Healthy Calcium And Phosphorus Levels In The Body For Strong Bones Supports Muscle Strength In Older Adults, And It Also Plays An Active Role In A Healthy Immune Response Vitamin D-3 (Cholecalciferol) Is The Optimal Form Of Vitamin D. It Is The Form Of Vitamin D That The Body Manufactures In Sunlight, And The Form Most Efficient For The Body'S Needs Suggested Use: 1 Tablet 2 To 3 Times Daily, Following A Meal Manufactured In The Usa. Manufactured In Scotts Valley, Ca, Under The Good Manufacturing Practices (Cgmps) Established By The Us Food And Drug Administration. (Fda)