Recommended dietary allowances for Vitamin B3

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  • For Indians
Group Particulars RDA (mg/day)
Men Sedentary Work 16
Moderate Work 18
Heavy Work 21
Women Sedentary Work 12
Moderate Work 14
Heavy Work 16
Pregnant Woman +2
Lactation
     0-6 months +4
     6-12 months +3
Infants 0-6 months 710 mg/kg
6-12 months 650 mg/kg
Children 1-3 years 8
4-6 years 11
7-9 years 13
Boys 10-12 years 15
Girls 10-12 years 13
Boys 13-15 years 16
Girls 13-15 years 14
Boys 16-18 years 17
Girls 16-18 years 14
  • For U.S. residents 
Life Stage Group RDA (μg NE*/day) UL* (μg NE*/day)
Infants
0-6 months 2 (AI*) ND*
7-12 months 4 (AI*) ND*
Children
1-3 y 6 10
4-8 y 8 15
Males
9-13 y 12 20
14-18 y 16 30
19-30 y 16 35
31-50 y 16 35
51-70 y 16 35
>70 y 16 35
Females
9-13 y 12 20
14-18 y 14 30
19-30 y 14 35
31-50 y 14 35
51-70 y 14 35
>70 y 14 35
Pregnancy
     £18 y 18 30
      19-30 y 18 35
      31-50 y 18 35
Lactating
      £18 y 17 30
        19-30 y 17 35
      31-50 y 17 35

*Abbreviations       AI   =   Adequate intake       UL   =   Tolerable upper intake level       ND  =   Not determinable due to lack of data       NE  =   Niacin equivalents (NE) 1mg niacin = 60 mg tryptophan,                    0 to 6 months = preformed niacin (not NE)