Nafronyl oxalate salt is primarily used in the treatment of peripheral vascular diseases. It helps improve blood flow by dilating blood vessels and reducing blood viscosity, making it effective in managing conditions like intermittent claudication and other circulatory disorders. Additionally, it is utilized to enhance cognitive function in elderly patients by increasing cerebral blood flow, which can aid in addressing symptoms of age-related cognitive decline. Its vasodilatory and metabolic effects also make it beneficial in treating diabetic neuropathy and other conditions associated with impaired microcirculation.