The phytochemical composition of plants is very diverse and includes many biologically active substances, their combination determines the pharmacological activity. This article examines underground part Paeonia tenuifolia L. leaves Petrocoma hoefftiana (Fisch.) Rupr. It was found that studied objects contain glycyrrhizic acid, peucedanin, flavonoids, phloroglucides, tannins, ascorbic acid. can...