Superoxide anion decomposing agent

Abstract

A scavenger of superoxide anion or nitric oxide comprising finepowder of a transition metal such as platinum. The scavenger is preferably provided as an aqueous solution containing transition metal colloid at a ratio of 1 mM or less per 1,000 ml, and can efficiently eliminate excessive superoxide anions or nitric oxide in vivo.

Dependencies are inferred from the claim text.