Is USP the same as IU? Understanding potency measurements in medication and supplements
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4 min read
For substances with complex biological activity, standard metric units of mass (like milligrams or micrograms) are often insufficient, leading to the use of units like USP and IU. Consequently, many consumers find themselves asking, "Is USP the same as IU?" The simple answer is no, though they are often harmonized for equivalence.
