Riboflavin is absorbed mainly in the duodenum. The metabolites of riboflavin are distributed throughout the tissues of the body and into the milk. A small amount is stored in the liver, spleen, kidneys and heart. Riboflavin is a water-soluble vitamin, excreted by the kidneys. Exceeds the amount put into the necessity of the body will be discharged unchanged in the urine. Riboflavin was discharged in feces.
Of excess
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