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Table 7 RDA Recommendations & Daily Vitamin Intake

From: Evidence based recommendations for an optimal prenatal supplement for women in the US: vitamins and related nutrients

Nutrient

Our Daily Recommendation

RDA Recommendation for Total Daily Intake for Pregnant Women

Daily Intake (Women aged 20–39) per NHANES unless otherwise noted

Tolerable Upper Limit for Pregnant Women

Decreases significantly during pregnancy if unsupplemented

Vitamin A

1200 mcg of pre-formed vitamin A & 1000 mcg as mixed carotenoids

770 mcg

596 mcg

3000 mcg

yes

Vitamin C

200 mg

85 mg

78 mg

2000 mg

yes

Vitamin D

2000 IU

600 IU

156 IU

4000 IU

yes

Vitamin E

19 mg

15 mg

7 mg

1000 mg

unknown

Vitamin K

90 mcg

111 mcg

90 mcg

a

unknown

DHA

600 mg

No RDA; NIH recommends 300 mga

62 mg [216]

a

Increases, but ratio of n-3 to n-6 decreases

Vitamin B1 (Thiamine)

6 mg

1.4 mg

1.5 mg

a

yes

Vitamin B2 (Riboflavin)

2 mg

1.4 mg

1.9 mg

a

no

Vitamin B3 (Niacin)

35 mg

18 mg

23 mg

a

yes

Vitamin B5 (Pantothenic Acid)

10 mg

6 mg

4 mg

a

yes

Vitamin B6 (Pyridoxine)

10 mg

1.9 mg

1.9 mg

100 mg

yes

Vitamin B7 (Biotin)

100 mcg

30 mcg

40 mcga

a

yes

Vitamin B9 (Folate)

400 mcg

600 mcg

527 mcg

1000 mcg

yes

Vitamin B12

25 mcg

4.54 mcg

2.6 mcg

a

yes

Choline

Trimester 1 and 2: 350 mg. Trimester 3: 600 mg

450 mg

276 mg

3500 mg/day

Increased need during third trimester

Inositol

500 mg

-

2000 mg

-

unknown

  1. a Safe at high levels; Tolerable Upper Limit Not Established