i.u International Unit (measure of biological activity, rather than the weight, of fat soluble vitamins).
one i.u vitamin A = 0.30 mcg retinol
one i.u beta carotene = 0.60 mcg retinol
one i.u vitamin D = 0.025 mcg
one i.u vitamin E = 0.67 mg d-alpha tocopherol (natural source vitamin E) or
1 mg dl-alpha tocopheryl acetate (synthetic vitamin E).
R.E Retinol Equivalent
one R.E = one ug (3.33i.u) retinol
= 6 ug beta carotene
= 12 ug other provitamin A carotenoids
-R.D.A - RECOMMENDED DAILY ALLOWANCE (as set by the Department of Health).
The average amount of energy of nutrients recommended to cover the average
needs of virtually all (97%) of the healthy population in order to prevent deficiency.
NOTE: RDA values do not reflect the levels of nutrients required for optimal health.
