![]() Vitamin C: 1 IU is 50 mcg L-ascorbic acid.Vitamin A: 1 IU is the biological equivalent of 0.3 mcg retinol or 0.6 mcg beta-carotene. ![]() How to convert from IU to Mg, you must know the converting value. 5Įach IU Vitamin has its specific mass of millimetre, which differ from one vitamin to another. Using milligrams changes the value range to 0.015-0.020 mg. ![]() In micrograms, that would be 15 to 20 µg. The RDA for an adult range from 600-800 IU. 40 IU of vitamin D equals one µg, which can be converted to 0.001 mg. Vitamin D: The most commonly available vitamin D preparation is vitamin D3 or cholecalciferol. The RDA for an adult is 22.4 IU of the natural version and 33.3 IU of the synthetic version, or about 15 mg and 30 mg. In micrograms, that is equivalent to 900 µg. The dl-alpha-tocopherol formulation contains 0.9 mg of vitamin E per IU. Converted to micrograms, it equals 670 µg. One IU of d-alpha-tocopherol equals 0.67 mg. Vitamin E: Vitamin E is available in two formats: d-alpha-tocopherol, a natural source, and dl-alpha-tocopherol, a synthetic source. Converted to milligrams, this amount equals 0.9 mg. If the RDA for vitamin A as a retinol preparation is 3,000 IU, the equivalent in micrograms is 900 µg. The value for beta carotene is 0.6 µg per IU. The IU equivalent of vitamin A in the retinol format is 0.3 µg per 1 IU. Vitamin A: There are two widely available preparations of vitamin A: retinol and beta carotene. One milligram of Vitamin E = 1.21 to 1.49IU (depending on the carrier).Īnd if their biological equivalent of the same substance may have different IU. One milligram of beta carotene = 1667IU of Vitamin A activity.ġ5mg of beta carotene = 25,000IU of Vitamin A activity. ![]() You can simply turn IU to mg, by choosing the equation: Amount of mg = Amount of IU × 0.0003
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