MRS2578, an effective P2Y6 receptor antagonist with IC50 of 37 nM, shows insignificant inhibition at P2Y1, P2Y2, P2Y4, and P2Y11 receptors.

Polygalasaponin possesses evident anxiolytic and sedative-hypnotic activities and has a relatively safe dose range, which supports the use of Polygala tenuifolia root as an anxiolytic and sedative-hypnotic drug in folk medicine.

Homogentisic acid shows interesting antioxidant and antiradical activities, and protective effect against thermal-cholesterol degradation, comparable to those of well known antioxidants.