Dihydroergocristine mesylate is primarily used in the treatment of cerebrovascular and peripheral vascular disorders. It helps improve blood flow and oxygen supply to the brain, making it effective in managing symptoms of cognitive decline, dizziness, and memory issues associated with aging or vascular conditions. Additionally, it is utilized to alleviate symptoms of peripheral vascular diseases, such as pain and cramping in the legs due to poor circulation. The compound also shows potential in reducing migraine frequency and severity by stabilizing vascular function. Its neuroprotective properties make it a valuable component in therapies aimed at enhancing cognitive function and overall vascular health.