As we celebrate the 235th birthday of our great nation, we asked a number of community leaders to share their thoughts on what the Fourth of July means to them. The Fourth of July reminds me very simply of our freedom.
Vitamin A: 1 IU is the biological equivalent of 0.3 mcg retinol, or of 0.6 mcg beta-carotene. 1  Vitamin D: 1 IU is the biological equivalent of 0.025 mcg cholecalciferol or ergocalciferol. 2  Vitamin E: 1 IU is the biological equivalent of 0.67 mg d-alpha-tocopherol, or 0.9 mg of dl-alpha-tocopherol.
What is mcg in a dosage? A: The abbreviation mcg stands for micrograms in medical dosages and is sometimes mistaken for the abbreviation for milligrams, or mg.. One microgram equals one one-thousandth of a milligram, states the U.S. Food and Drug Administration. Continue Reading.