Antazoline phosphate is an antihistamine with anticholinergic properties. Antazoline prevents the typical allergic symptoms on capillaries, mucous membranes, skin, and gastrointestinal and bronchial smooth muscles by antagonizing the histamine H1 receptor
ST-115 is a potent and specific inhibitor of aminopeptidase P2. When ST-115 is administered intravenously at the start of reperfusion, it reduces bradykinin degradation. This increases bradykinin's concentration in the capillaries and enhances its protective effects.