Vitamin D Supplements May Not Be As Advertised
Vitamin D supplements may be a lot more, or a lot less potent than the label says.
That's according to researchers in Oregon who tested 55 bottles of dietary supplements.
They found the amount of Vitamin D in the tested pills ranged from 9 percent to 146 percent of the amount on the label.
The supplement industry is not strictly regulated, and the FDA is considering new safety guidelines.