Dietary Reference Intakes for cyanocobalamin

  • For Indians
Group Particulars Body weight (kg) * *RDA (mg/day)
  Infants   0-6 months   5.4   0.2
  6-12 months   8.6   0.2
  Children   1-3 years   12.2   0.2-1.0
  4-6 years   19.0   0.2-1.0
  7-9 years   26.9   0.2-1.0
  Boys   10-12 years   35.4   0.2-1.0
  13-15 years   47.8   0.2-1.0
  16-18 years   57.1   0.2-1.0
  Girls   10-12 years   31.5   0.2-1.0
  13-15 years   46.7   0.2-1.0
  16-18 years   49.9   0.2-1.0
  Man   Sedentary work   60   1
  Moderate work   60   1
  Heavy work   60   1
  Woman   Sedentary work   50   1
  Moderate work   50   1
  Heavy work   50   1
  Pregnant   50   1
  Lactation-0-6 months   50   1.5
  Lactation-6-12 months   50   1.5
·         For U.S. residents
Age * *RDA (mg/day)  
  Infants
  0-6 months   0.4*
  7-12 months   0.5*
  Children
  1-3 years   0.9
  4-8 years   1.2
  Males
  9-13 years   1.8
  14-18 years   2.4
  19-30 years   2.4
  31-50 years   2.4
  51-70 years   2.4
  > 70 years   2.4
  Females
  9-13 years   1.8
  14-18 years   2.4
  19-30 years   2.4
  31-50 years   2.4
  51-70 years   2.4
  > 70 years   2.4
  Pregnancy   2.6
  Lactation   2.8

*AI, adequate intake values.  * *R.D.A (Recommended Dietary Allowance)

Those people who are older than 50 years should take foods fortified with B12 or a supplement containing it as the absorption of this vitamin decreases by this age