I have taken this formula for years because it is the only one that has several of the less known ingredients for bone support. I do not believe my body absorbs calcium supplements, so I am happy to have one that is not calcium. I have been diagnosed with osteopenia, but who knows where I'd be physically without my Ultimate Bone Support? I have had several falls that could have resulted in broken bones but did not. I think the supplement is making the bone I have left stronger and not brittle, like some people's bones. Thank you for this supplement.