angiotensin I - a physiologically inactive form of angiotensin that is the precursor to angiotensin II

angiotensin II - a potent vasopressor agent formed from angiotensin I

vasoconstrictive, vasoconstrictor - 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

brand, brand name, marque, trade name - a name given to a product or service