ABSTRACT
<p><b>OBJECTIVE</b>To investigate pharmacokinetic parameters of peoniflorin, albiflorin and amygdaloside after administration of Guizhi Fuling capsule in beagle dogs.</p><p><b>METHOD</b>Plasma was collected from forelimb vein of Beagle dogs after oral administration of Guizhi Fuling capsule. HPLC-MS/MS method was used to determine the concentrations of constituents in plasma. The pharmacokinetic parameters were analyzed by program DAS 2.0.</p><p><b>RESULT</b>The limit of quantitation of peoniflorin, albiflorin and amygdaloside were 0.25, 2.64, 0.04 microg x L(-1), respectively. After administrated with different doses, half-life of peoniflorin in dogs were 4.33, 3.62 h, albiflorin were 6.16, 5.91 h, amygdaloside were 2.43, 1.32 h. The AUC(0-t) of all components were related to dose.</p><p><b>CONCLUSION</b>The pharmacokinetic course of peoniflorin, albiflorin and amygdaloside can be described by two-compartment model, and these components have high expose.</p>