For example, in my case, many years ago I had one of
sent to a lab and found that my stones
are primarily made up of
iron and calcium. As a result, since I live out in a rural area, with well water that is high in iron content, I DO NOT drink the water from my water well and I drink bottled water. My body does not absorb calcium or throw it off like others do, so I do not take vitamins with calcium added, beyond the normal daily requirements.