The present invention relates to a composite for the treatment of a
variety of medical conditions, the composite comprising an oxidized
glutathione-based compound, which has a disulfide bond, and a metal
material, in particular where the metal is either platinum or palladium.
The oxidized glutathione-based compound and metal material can be present
in a ratio of 3000 to 1 and preferably 1000 to 1. The oxidized
glutathione-based compound can be oxidized glutathione itself or salts or
derivatives. A feature of the invention is that the composite has a more
stabilized disulfide bond than the oxidized glutathione-based compound
itself. Methods for preparing the composite are provided, such methods
being beneficial in that the composite is provided in high yields and at
high purity. Methods for treating various medical conditions with the
composites of the present invention are also disclosed.