Is there a vasodilator that lowers intra-cranial pressure?

Loaded question. Why is it you have elevated intracranial pressure. Intracranial hypertension, pseudotumor? The cause is imprtant as to potential treatments vasodilars my be inapprpriate as they may increase a headache some diuretics such as mannatol and Diamox (acetazolamide) are used to control intracranial pressure.