Table 7.

RDA Recommendations & Daily Vitamin Intake

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 mg^a	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 mcg^a	^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

^a Safe at high levels; Tolerable Upper Limit Not Established