Looks like there's a chance you aren't taking as much as you think you are: Some tested at only 7% of the labeled amount!
MONDAY, Feb. 11 (HealthDay News) -- Many vitamin D supplements may not contain what their label says they do, a new study warns.
Some pills may pack a lot more vitamin D than the label states, and others may provide markedly less, according to the findings, published in a research letter Feb. 11 in JAMA Internal Medicine.
The researchers are more concerned by pills delivering too little of the vitamin than pills providing too much.
"It can be hard to overdose on vitamin D," said study author Dr. Erin LeBlanc, an endocrinologist and researcher with the Kaiser Permanente Center for Health Research in Portland, Ore. However, the findings "may be a concern for those who have been told by their doctor to take vitamin D if their chosen supplement does not have the amount listed."
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