Calcium citrate is an organic form of calcium that is significantly better absorbed in postmenopausal women than inorganic calcium oxide. Magnesium citrate is a highly bioavailable form of magnesium that helps to maintain bone mineral density: in healthy young men, regular magnesium supplementation has been shown to suppress bone turnover rates. Vitamin D improves the absorption of calcium and phosphorous, and helps in the maintenance of bone health. Osteoporosis Canada-s guideline statements recommend a daily vitamin D intake of 400-1000 IU for low-risk adults under 50 years of age and 800-2000 IU for high-risk and older adults. Vitamin D intakes of 700-800 IU per day are associated with a decreased risk of bone fracture, in comparison with 400 IU per day.
