RESUMO
AIM: To study compatibility rationality of combination of Paeonia lacliflora and Glycyrrhiza uralensis. METHODS: The effective combination of paeoniflorin(44% purity),glycyrrhizic acid(50% purity) and liquorice flavones(52% purity),glycyrrhizic acid(50% purity) and liquorice flavones(52% purity) were respectively administered to rats.Pharmacokinetic change of these constituents in rat blood was studied. RESULTS: The pharmacokinetic parameters of these constituents in rat blood showed that the increases in AUC and C_(max) of effective combination group were more than that of glycyrrhizic acid group or that of liquorice flavones group.T_(max) of the former was extended with respect to the latters.Clearance of effective combination markedly slowed down. CONCLUSION: The effective combination of paeonia lacliflora and Glycyrrhiza uralensis have the advantage of either Paeonia lacliflora or Glycyrrhiza uralensis.