Nitric oxide concentration increasing agent

摘要

An agent for elevating nitric oxide (NO) concentration comprising glutathione or a salt thereof as an active ingredient; an agent for elevating NO concentration comprising glutathione or a salt thereof as an active ingredient for preventing or ameliorating a vascular endothelial malfunction-related symptom, or dilating blood vessels or promoting blood flow by elevating NO concentration; and a method for elevating NO concentration by ingesting glutathione or a salt thereof.