Cilastazol is a 2-oxo-quinoline with vasodilator, antimitogenic, antithrombotic, and cardiotonic properties. This compound has been shown to cause inhibition of adenosine uptake, eventually resulting in changes to cAMP levels. Studies have shown Cilostazol to be a potent inhibitor of PDE3A (phosphodiesterase 3A) in the cardiovascular system. In addition Cilastazol has also been observed to inhibit mitogenesis, migration of vascular smooth muscle cells, and platelet aggregation. Cilostazol displays a capacity to lower levels of serum triglycerides and cause some increase in HDL-cholesterol levels.