Salvianolic acid B (Dan Shen Suan B) is a water-soluble antioxidant from Salvia extract. It plays significant role of antioxidant effect; antiplatelet aggregation, anticoagulant, and antithrombotic effect

The administration of Salvianolic acid B (10 mg/kg) significantly ameliorates the memory impairment induced by the Aβ25-35 peptide in the passive avoidance task (P<0.05). Additionally, Salvianolic acid B treatment reduces the number of activated microglia and astrocytes observed during the inflammatory reaction following the administration of the Aβ25-35 peptide. Furthermore, Salvianolic acid B markedly reduces the expression levels of inducible nitric oxide synthase and cyclooxygenase-2, as well as thiobarbituric acid reactive substances, which are increased by the administration of the Aβ25-35 peptide. Moreover, Salvianolic acid B administration significantly rescues the Aβ25-35 peptide-induced decrease in choline acetyltransferase and brain-derived neurotrophic factor protein levels[4].