Function:
Riboflavin (vitamin B2) is a coenzyme in numerous reactions involved with amino acid metabolism, as well as the breakdown of sugars and fatty acids.

Recommended Dietary Allowance:
For men 1.3 mg per day and for women 1.1 mg per day.

Deficiency:
Deficiency results in a sore throat, redness and swelling in the mouth and tongue, anemia, and a dry scaling rash. It is usually associated with other nutritional deficiencies.

Sources:
Milk, yogurt, cheese, meat, eggs, broccoli, asparagus, oranges, and whole grain foods are good sources of riboflavin.

Toxicity and UL:
There are no reports of human toxicity and no UL has been set.

Recommendation:
Supplementing with riboflavin is not necessary. A clinical trial using riboflavin 400 mg daily in 54 people with migraine headache showed improvement over a three-month trial period. This study needs to be repeated.

For more information visit:
http://osu.orst.edu/dept/lpi/infocenter/vitamins/riboflavin/