USTAGISOTC34-N2123-DTR23304
DUE: NOVEMBER 10, 2020
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ISO/DTR 23304:2020(E)
5 US unit conversions
In May 2016, the US Food and Drug Administration (FDA) announced regulations that require amendments to the existing supplement facts label, which uses units and conversions based on the 1968 recommended daily Allowances (RDA). The new regulations will become mandatory in 2019-2020 [31] . The changes are in the units used to declare vitamins and minerals on supplement labels. The FDA will permit manufacturers to include the amounts of nutrients in the old units in parentheses adjacent to the amounts in the new units.
Table 18 – Units and conversions for several vitamin nutrients
Nutrient
Former unit
Former conversion
New unit
New conversion
Vitamin A
IU
1 IU = 0,3 µg retinol
µg RAE
1µg RAE = 1 µg retinol
1 IU = 0,6 µg beta carotene
1 µg RAE = 2 µg supplemental beta- carotene
1 µg RAE = 12 µg beta-carotene
1 µg RAE = 24 µg alpha-carotene
1 µg RAE = 24 µg beta crytoxanthin
Vitamin E
IU
1 IU = 0,67 mg for D- alpha tocopherol (natural) 1 IU = 0,9 mg for D,L- alpha tocopherol (synthetic)
mg
alpha
1 mg vitamin E (as alpha tocopherol) label claim = 1 mg of natural alpha tocopherol 1 mg vitamin E (as alpha tocopherol) label claim = 2 mg of synthetic alpha tocopherol
tocopherol
Vitamin D
IU
1 IU = 0,025 µg
µg
1 IU = 0,025 µg
Folate
µg
µg DFE
1 µg DFE = 1 µg folates
1 µg DFE = 0,6 µg folic acid
Niacin
mg
mg NE a
1 mg NE = 1 mg niacinamide
1 mg NE = 1 mg inositol hexanicotinate
1 mg NE = 1 mg niacin
1 mg NE = 60 mg tryptophan
Niacin equivalent.
a
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