Dipyridamole (trademarked as Persantine and others) is a nucleoside transport inhibitor and a PDE3 inhibitor medication that inhibits blood clot formation when given chronically and causes blood vessel dilation when given at high doses over a short time
Dipyridamole is an antiplatelet agent used in secondary prophylaxis against stroke and as an adjunctive agent with warfarin post mechanical valve replacement. It is also used in the evaluation of coronary artery disease during a pharmacologic stress test.