In the scientific community, there is a debate on the ideal and safe amount of Calcium, with risks being linked to over-supplementation. We suggest checking with your physician to determine your own needs. Rather than including Calcium in Essential for Women 50+, we included “helper nutrients,” like Vitamin D3, Vitamin K2, Magnesium, and Boron, to support bone health and complement the Calcium you’re already getting from your diet. As for Iron, the Recommended Daily Allowance is 8 mg daily. Almost all women over 50 reach this daily value through diet alone, so that you won’t find it in Essential for Women 50+.*