

New dietary supplement labeling requirements from the FDA (Food and Drug Administration) will go into full effect by January 2021. Starting in 2021, the International Unit will no longer be the only strength listed on vitamin D supplements.

The International Unit (IU), which refers to the "biological activity" of a drug or substance, is the most common way in which the strength of Vitamin D is listed, or at least it historically has been. In 2017 alone, supplemental Vitamin D accounted for $937 million in sales!Ī common source of confusion is how the strength of Vitamin D is listed on the supplement label.
#MCG TO IU CONVERTER SKIN#
Vitamin D, a fat-soluble vitamin naturally produced in the skin in response to sunlight, is also one of the most purchased over the counter (OTC) supplements.
