Understanding the Conversion: How Many IU is 1mg of Vitamin D?
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3 min read
One microgram of vitamin D is equivalent to 40 International Units (IU). This key fact is the basis for calculating how many IU is 1mg of vitamin D, a question that frequently arises when comparing supplement labels and dosages. Understanding the distinction between units of mass like milligrams (mg) and units of biological activity like IU is vital for accurate and safe supplementation.
