Fasudil (HA-1077; AT877) mesylate is a nonspecific and orally active RhoA/ROCK inhibitor and also has inhibitory effect on protein kinases, with an K i of 0.33 μM for ROCK1 , IC 50 s of 0.158 μM and 4.58 μM, 12.30 μM, 1.650 μM for ROCK2 and PKA , PKC , PKG , respectively. Fasudil mesylate is also a potent Ca 2+ channel antagonist and vasodilator.