Synonyms for Pressor (same or very similar meaning)
WordNet sense 1 (any agent that causes a narrowing of an opening of a blood vessel: cold or stress or nicotine or epinephrine or norepinephrine or angiotensin or vasopressin or certain drugs; maintains or increases blood pressure):
vasoconstrictive, vasoconstrictorFrom the ODE community, based on WordNetadd/edit