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An International unit (IU) is a unit of measurement in pharmacology. It is based on measured biological activities.
The equivalents of 1 IU for some vitamins:
|Vitamin A (retinol equivalents)||0.3 micrograms|
|Vitamin C||50 micrograms|
|Vitamin D (cholecalciferol/ergocalciferol)||0.025 micrograms|
|Vitamin E (alpha tocopherol equivalents)||0.666 (2/3) milligrams|
An alternative abbreviation for International Unit is UI.
Last updated: 10-25-2005 02:12:08
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