Medical and veterinary applications of light to therapeutic compounds includeasolution retainer adapted to retain a therapeutic solution against a tissue ofa user; a fiberoptic cable; a light source that connects with the fiber optic cable andprovides a light of apredetermined wavelength to the fiber optic cable; and a light termination onthe fiber opticcable that exposes the light to the therapeutic solution. A formulationincludes an oxidizer;the therapeutic solution having an initial therapeutic effectiveness; and alight of apredetermined frequency that that undergoes a synergistic reaction with theoxidizer, therebyenhancing the initial therapeutic effectiveness of the solution.