A cerebral vasodilator is a drug which acts as a vasodilator in the brain. They are used to improve blood flow in people with cerebrovascular insufficiency and to treat neurological disorders secondary to this condition. A number of different cerebral vasodilators exist. An example is ifenprodil, which has been marketed for use as a cerebral vasodilator in France, Hong Kong, and Japan. Other examples include buphenine (nylidrin), isoxsuprine, oxyfedrine, suloctidil, and tinofedrine.