ABSTRACT Our studies have suggested that the mechanism of action of the sum of flavonoids (liquid extract "Hemostat") from pylori, pylori, nettle and nettle in a ratio of 1: 1: 1 on the blood coagulation process is associated with its effect on the number, adhesion and platelet aggregation, as well as the retractive ability of platelets. It was revealed that the liquid extract "Hemostat" has a pronounced hemostatic effect and in this respect it is noticeably superior to the known preparation of the liquid extract of the shepherd’s bag.