Cilostazol is an antiplatelet drug and a vasodilator. Cilostazone can increase blood flow and the amount of oxygen that gets to the muscles. Cilostazone works by stopping blood cells called platelets from sticking together and prevents them from forming harmful clots. Cilostazone also widens blood vessels in the legs. Cilostazone is used to treat the symptoms of intermittent claudication. This condition causes reduced blood flow to the legs, leading to pain while walking. Cilostazone improves your ability to walk longer distances without pain. Cilostazone is available in strengths of 50, and 100 mg.