Generic name: fasudil hydrochloride hydrate. The rho-kinase inhibition effect found by Asahi Kasei Pharma Corporation is a vasodilator agent with new unique functionality never seen in previously developed treatments. By suppressing the activation of neutrophils and the contraction of smooth muscle in blood vessel walls, it effectively improves the functions which has been damaged by cerebral vasospasm and accompanying cerebral ischemia following operations for subarachnoid hemorrhage. Eisai has acquired rights to develop and market it in South Korea.