Isoxsuprine Hydrochloride is primarily used as a vasodilator to improve blood flow, particularly in conditions involving peripheral vascular diseases. It helps in relaxing the blood vessels, which can alleviate symptoms like cramps, pain, and discomfort caused by poor circulation. Additionally, it is sometimes employed in veterinary medicine to assist with labor in animals by relaxing the uterine muscles. Its ability to enhance circulation also makes it useful in treating certain types of muscle spasms and promoting healing in tissue injuries.