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Riboflavin
Nutritional factor found in milk, eggs, malted barley, liver, kidney, heart, and leafy vegetables. The richest natural source is yeast. It occurs in the free form only in the retina of the eye, in whey, and in urine; its principal forms in tissues and cells are as flavin mononucleotide and flavin-adenine dinucleotide.
Flavin mononucleotide
go.drugbank.com/drugs/DB03247ApprovedInvestigationalFlavin mononucleotide (FMN), also known as riboflavin 5'-phosphate, is one of the two major coenzymes derived from [riboflavin] (vitamin B2) and is one of the principal forms in which dietary riboflavin … [L54226] In addition to its systemic use as a means of riboflavin supplementation, a topical ophthalmic preparation of FMN was approved by the FDA in October 2025 for use as a photoenhancer in epithelium-on
Synonyms: Riboflavin phosphate, riboflavin 5'-phosphateSalts: Riboflavin sodium phosphate, Riboflavin 5'-phosphate sodium anhydrousFlavin adenine dinucleotide
go.drugbank.com/drugs/DB03147ApprovedA condensation product of riboflavin and adenosine diphosphate. The coenzyme of various aerobic dehydrogenases, e.g., D-amino acid oxidase and L-amino acid oxidase.
Synonyms: Riboflavin 5'-adenosine diphosphate, adenosine 5'-[3-(riboflavin-5'-yl) dihydrogen diphosphate]Riboflavin tetrabutyrate
go.drugbank.com/drugs/DB14727InvestigationalSynonyms: Riboflavin tetrabutyrate, Riboflavin 2',3',4',5'-tetrabutyrate