ABSTRACT
<p><b>OBJECTIVE</b>To study the major metabolites of ferulic acid and gallic acid compatible with Danggui Chishaoyao in rat plasma and urine.</p><p><b>METHOD</b>The metabolites of ferulic acid and gallic acid in rat plasma and urine were analyzed after oral administration of compatible Danggui Chishaoyao using UPLC-Q-TOF-MS.</p><p><b>RESULT</b>On the basis of the mass information, it was inferred that in vivo metabolites of ferulic acid were be in the form of methylation products, sulfate conjugation products and glucuronidation conjugation products and so on; meanwhile, gallic acid was mainly transformed into eduction products and methylation products.</p><p><b>CONCLUSION</b>There are kinds of phase I and phase II metabolites of ferulic acid and gallic acid in rat plasma and urine, which provide a basis for its efficacious materials and action mechanism.</p>