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.
mc is a medical abbreviation for micro- meaning one millionth of.. The S.I. prefix for micro- is , which doesn't appear on most pharmacists' keyboards; hence the usage of mc instead. So, 1 mcg is the same as 1 g - one microgram or one millionth of a gram.. 1 g = 1000 mg. 1 mg = 1000 mcg (g)