In 1993, the European Scientific Committee for Food set population reference intakes (PRI) for vitamin B2 (riboflavin) in milligrams (mg) per day (14):

 

Age	Males: mg/day	Females: mg/day
6–12 months	0.4	0.4
1–3 years	0.8	0.8
4–6 years	1.0	1.0
7–10 years	1.2	1.2
11–14 years	1.4	1.2
15–17 years	1.6	1.3
18 years and older	1.6	1.3
Pregnant	-	1.6
Breast-feeding	-	1.7

In 1998, the U.S. Food and Nutrition Board established recommended dietary allowance (RDA) values for vitamin B2 (riboflavin), based on the prevention of deficiency (1):

 

Life Stage	Age	Males: (mg/day)	Females: (mg/day)
Infants	0–6 months	0.3 (AI)	0.3 (AI)
Infants	7–12 months	0.4 (AI)	0.4 (AI)
Children	1–3 years	0.5	0.5
Children	4–8 years	0.6	0.6
Children	9–13 years	0.9	0.9
Adolescents	14–18 years	1.3	1.0
Adults	19 years and older	1.3	1.1
Pregnancy	all ages	-	1.4
Breast-feeding	all ages	-	1.6

For a detailed overview of recommended daily intakes (PRIs/RDAs) of vitamins and minerals for adults derived from different countries and organizations see PDF.