You are right. I remembered that it was mg. I edited my post and did the conversion according to this https://en.wikipedia.org/wiki/International_unit https://e

You are right. I remembered that it was mg. I edited my post and did the conversion according to this https://en.wikipedia.org/wiki/International_unit https://en.wikipedia.org/wiki/International_unit Vitamin D: The biological activity of 40 IU is equal to 1 μg[9]