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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