Q:

What equation should you use to convert international units to milligrams?

A:

Quick Answer

No general equation exists for converting international units to milligrams. An international unit is a measurement typically used for medications, vaccinations and vitamin supplements, but the volume of an international unit changes with the individual substance.

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Full Answer

International agreement determines how much an international unit is for each substance, and the measurement depends upon the potency of the substance. One international unit of Vitamin A is equivalent to 0.3 micrograms or 0.0003 milligrams. Alternatively, an international unit of Vitamin E is 0.67 micrograms or 0.00067 milligrams.

If you need to know the milligrams contained in an international unit of a pharmaceutical product, ask your pharmacist to find it for you. Information on nutritional supplements is usually available from the manufacturer.

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