Vitamin D supplements may vary in potency depending on manufacturer

Medical Watch
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Researchers tested 55 bottles of Vitamin D supplements from 12 different manufacturers and found that the potency varied widely.

Some of the pills had as little as 9 percent of the dose listed on the labels while others had as much as 140 percent.

The researchers say none of the supplements was likely to be dangerous, but some contained too little of the vitamin to effectively treat someone with a deficiency.

Read more about the study here.

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