Vitamin B12 dosage (RDA)

Recommended Dietary Allowances (RDA) for Vitamin B12:

• children 1-3 years 0.9 mg per day
  
• children 4-8 years 1.2 mg per day
  
• children 9-13 years 1.8 mg per day
  
• 14-18 years 2.4 mg per day
  
• 14-18 years pregnant 2.6 mg per day
  
• 14-18 years lactating 2.8 mg per day
  
• adult 2.4 mg per day
  
• adult pregnant 2.4 mg per day
  
• adult lactating 2.4 mg per day