Used in medical research and clinical settings to study and treat conditions involving low blood pressure, particularly in cases of shock. It acts as a potent vasoconstrictor, helping to increase blood pressure by narrowing blood vessels. Employed in diagnostic procedures to assess adrenal gland function and in the management of acute hypotension when other treatments are not effective. Also utilized in experimental physiology to investigate the renin-angiotensin system’s role in cardiovascular regulation.