XK and influenza: In addition, GA (1), licorice-saponin A3 (3), licorice-saponin G2 (9), 22β-acetoxylglycyrrhizin (17), and licorice-saponin M3 (25) were shown to possess moderate influenza neuraminidase (NA)-inhibitory activity by the commercial NA inhibitory screening kit, although the measured activity was lower than that of Oseltamivir [31].