还是要小心对待这种流传的E-mail"科普". 根据RDA,成人不要>1.7mg/day.

 

Dietary Reference Intakes for riboflavin (vitamin B2):

Infants

• 0 - 6 months: 0.3* milligrams per day (mg/day)
• 7 - 12 months: 0.4* mg/day

*Adequate Intake (AI)

Children

• 1 - 3 years: 0.5 mg/day
• 4 - 8 years: 0.6 mg/day
• 9 - 13 years: 0.9 mg/day

Adolescents and Adults

• Males age 14 and older: 1.3 mg/day
• Females age 14 to 18 years: 1.0 mg/day
• Females age 19 and older: 1.1 mg/day

The best way to get the daily requirement of essential vitamins is to eat a balanced diet that contains a variety of foods.

来源: http://www.nlm.nih.gov/medlineplus/ency/article/002411.htm