Here you can read about what vitamin D is, both D2 and D3, measured in International Units (IU).
Vitamin D exists in two forms, Vitamin D2 and Vitamin D3. Despite its name, vitamin D is not a vitamin. It is a hormone that can be synthesized by sunlight.
It is fat-soluble vitamin, which means that the body does not need these every day. We have the potential to store it in our bodies.
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Vitamin D2 And Vitamin D3
Vitamin D exists in two forms. Vitamin D2 and Vitamin D3. (source 🗗)
There are a few differences between the two D vitamins. You can read more on Vitamin D, D2 and D3.
It's difficult for people to get enough vitamin D from food alone.
Supplements are an alternative, but taking too many vitamin D supplements over a long period can cause too much calcium to build up in the body. So be careful and take the right amount.
IU stands for International Units. It is a unit of measurement for vitamins and other specific substances. It is commonly used to measure fat-soluble vitamins, like Vitamin A, D, and E.
Vitamins are measured in milligrams, micrograms, or international units. Milligrams and micrograms show the amount of mass in a sample. But international units show the level of biological activity of the substance. (source 🗗)
For unit conversion, the formula is:
To convert Vitamin D:
From IU to mcg: IU * 0.025 = mcg
Example: 400 IU * 0.025 = 10 mcg