Milk and milk products are the main sources of riboflavin in pre-school children‟s diets and the diets of school children and adolescents (4-18 years), adults (19-64 years), and the elderly (65 years and over)13-18. A 200ml glass of semi-skimmed milk provides 45% of an adult‟s (19-50 years) daily requirement for riboflavin8,21