aja8888
Moderator Emeritus
As far as I can tell, they are all about the same. I take one--because humans have very complex nutritional requirements, I have no idea if I'm checking all the boxes, and it is cheap insurance. I wouldn't pay more a nice label/expensive marketing. I do recall reading some good papers that most men and post-menopausal women do not require much/any additional iron from supplements, and that excess iron is not good for heart health. So, I buy vitamins for oldsters, since those pills usually lack iron.
That's a good summary. I have seen the same about the lack of need for iron.