| Ae0–24h | the percentage of the dose excreted in the urine during 24 h |
| AUC | area under the plasma concentration–time curve |
| CL | time-averaged total body clearance |
| CLNR | time-averaged nonrenal clearance |
| CLR | time-averaged renal clearance |
| Cmax | maximum plasma concentration |
| F | the extent of absolute oral bioavailability |
| fu | unbound fraction |
| GI24 h | the percentage of the dose recovered from the gastrointestinal tract at 24 h (including their contents and feces during 24 h) |
| IMP | imperatorin |
| IS | internal standard |
| LC-MS/MS | liquid chromatographic–tandem mass spectrometry |
| LLOQ | lower limit of quantification |
| MRT | mean residence time |
| PA | paeonol |
| PKs | pharmacokinetics |
| SD | standard deviation |
| SSa | saikosaponin a |
| Tmax | time to reach Cmax |
| Vss | apparent volume of distribution at steady state |
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