Dilazep dihydrochloride is used as a vasodilator to improve blood flow, particularly in the coronary and cerebral circulations. It functions primarily by inhibiting the cellular uptake of adenosine, increasing its extracellular concentration to promote vessel relaxation and enhance oxygen delivery. This helps in treating conditions related to reduced blood supply to the heart and brain. It also exhibits antiplatelet activity, preventing excessive clot formation. Commonly used in cardiovascular therapy for angina and post-stroke recovery. May be included in formulations aimed at enhancing microcirculation and managing ischemic conditions.