But the fact is, fat soluble nutrients are listed in
IUs, so any recommended dietary advice for Vitamin A should be in
IUs, not mgs, really. Same with Vitamin D, E, and any other fat soluble nutrients. The important thing to know is, you really don't look for Vitamin A in food because an excess of Vitamin A is liver toxic. What you usually try to do is eat the recommended amount of beta carotene, which the body safely converts to Vitamin A, eliminating any potential problems.