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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