19-30 years 
  • 0-6 months
  • 7-12 months
  • 1-3 years
  • 4-8 years
  • 9-13 years
  • 14-18 years
  • ✓
    19-30 years
  • 31-50 years
  • 51 + years
Female 
  • ✓
    Female
  • Male

Not established because there are no reports of vitamin B2 toxicity in humans from food intake or from supplements of up to 400 mg/day for 3 months. However, the Food and Nutrition Board does caution against taking excessive amounts.