Fsc Osteo Formula contains a unique nutrient combination to help maintain a healthy bone structure. It contains a significant amount of Calcium and Magnesium, plus their synergistic nutrients. Calcium is provided as a combination of carbonate, citrate & malate. It contains a base of Horsetail herb, traditionally valued for its silica content. Silica may aid the proper distribution of calcium in the body Contains betaine hydrochloride to aid mineral digestion & absorption.