View Full Version : What does I.U. stand for like in vit. E 400 I.U. ??

02-01-2001, 04:14 PM
what is the difference between I.U. and MG like 400 IU . Is that the same *** 400 MG ??

02-03-2001, 09:06 AM
International Units (IU) are an old terminology used to state the potency of vitamins A, D and E before vitamins were manufactured in a pure enough form to be measured by weight.

One IU of Vitamin A = 0.3 micrograms

One IU of Vitamin D = 0.025 micrograms

One IU of Vitamin E = 0.67 milligrams


02-04-2001, 09:00 AM
IU is international unit and mg is milligrams.I think they are the same according to a book written by Adelle Davis. I have only seen Vit. E in IU.