Researchers led by Erin S. LeBlanc, MD, MPH, of the Kaiser Permanente Center for Health Research in Portland, Oregon report that the amount and potency of vitamin D sold in over-the-counter supplements do not always match the information on their labels. However, they found that products with the USP verification mark are generally more accurately labeled than those without the mark. It is estimated that more than 100 million Americans spend billions of dollars on dietary supplements and multivitamins annually, according to a recent editorial in the New England Journal of Medicine. However, the production and sale of these products […]Continue reading Vitamin D Supplements Tested for Quality
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