How many mcg are in 400IU of Vitamin D?
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3 min read
According to the National Institutes of Health, 10 mcg (micrograms) of vitamin D is equivalent to 400 International Units (IU). Understanding this conversion is crucial for interpreting supplement labels, especially as many countries now use metric units like mcg for nutritional information. The simple arithmetic behind this change can help you better manage your daily vitamin intake.
