I work with an honest R&D department. We found that minerals in multis were crystalizing in the small intestines in great numbers - mostly turning into free radicals, destroying any antioxidants around them.

We tested 250 name brand supplements - all of them had the problem.

The fix is a patented process called Oligo Fructose Compounding - causing 10x’s more absorbency of minerals (like calcium).

The point - if your calcium doesn’t have Oligo, you are not getting what you need. And mega doses are a problem.