[arcticbull]

Without any regulation how do you know how effective your particular multivitamin is at making bioavailable any given vitamin or mineral, re: the study I posted showing a range of 19% to over 90% for magnesium? It's pretty much impossible to know if they do anything at all. Which brings me back to my point: if you have a specific issue, a specific supplement whose effectiveness if validated is likely way cheaper and much more effective -- otherwise, the advice I would give anyone is to eat their greens and stop fretting.