| abstract |
An active ingredient other than a precursor amino acid is added from the viewpoint of increasing the ability to synthesize glutathione in a cell as a method different from or in combination with a method for supplying a precursor amino acid used for glutathione biosynthesis. Provided is an orally ingestible composition capable of promoting intracellular glutathione biosynthesis in order to maintain a high level of glutathione in a living body (in a tissue or in a cell). An oral composition for increasing intracellular glutathione concentration, comprising at least one of rubrofusarin glycosides in an effective amount for increasing in vivo glutathione concentration. |