Vitamin B2 (Riboflavin)


Riboflavin metabolism is controlled by different hormones (adrenal and tyroïdiennes) that regulate its conversion in both forms of coenzimes.

In tissues, riboflavin is present as coenzyme bound to proteins. Approximately one third of reserves liver, heart and kidney as the two other major sites of storage. The amount present in a human body of 75 kg was estimated at 250-500 mg. It is assumed that in humans, the reserves are sufficient for two to six weeks.

Vitamin B2 is very stable to heat, but very sensitive to light. It is very toxic or nontoxic. This link is on the one hand to its limited capacity to absorb and stokage and secondly to its low solubility.

Sources of Vitamin B2 (Riboflavin)

See the list of foods that provide the most vitamin B2


The 100% value in the RNI Nutrimeter ® is 1.6 mg per day for an adult man and 1.5 mg per day for an adult woman.

The lack of toxicity of vitamin B2 must not be a pretext for supplementation intemperate and unfounded.

(Source: "Recommended dietary allowances for the French population," the CNERNA-CNRS. Edition coordinated by Ambroise Martin.)