It seems like whenever this topic comes up, people conclude that there aren't any known good calcium supplements—they may contain a large enough proportion of phosphorus to defeat the purpose of supplementing calcium.
My question: is it really that hard to find out? Couldn’t I send a sample of my Now Foods calcium carbonate powder to some lab and have them analyze it?
My question: is it really that hard to find out? Couldn’t I send a sample of my Now Foods calcium carbonate powder to some lab and have them analyze it?