I wish I had known this before taking calcium supplements! I had some major plaque buildup as a result, and did a urine 24 hour test, and I was just spilling out calcium! Always do your research there is so much the doctors never tell you! Such as if you take Kral, Leah, and you stop. Your bones will demineralize, and your bones will be worse than when you started taking it. My doctor was so dismissive when I brought that up to her!