Vitamin D supplement labels may be inaccurate

NEW YORK (Reuters Health) – The amount of vitamin D in some supplements may be either much lower or much higher than what’s written on the label, according to a new analysis. Researchers found that off-the-shelf pills from 12 different manufacturers had between 52 percent and 135 percent of their advertised vitamin D content. And among vitamins mixed by compounding pharmacies, the variation in doses was even greater – from 23 percent to 146 percent of the labeled amount. “I’m not at all surprised that they’re very variable,” said Dr. …