【Abstract】 Aim To study the excretion of(-)-clausenamide in rats.Methods The urine,feces and bile were collected at predetermined time points after(-)-clausenamide was orally administrated to 6 rats(30 mg·kg~-1).The concentrations of(-)-clausenamide and its metabolite 6-OH-(-)-clausnamide were determined by HPLC-MS/MS method using glipzide as the internal reference,and the accumulative excretion amount of(-)-clausenamide and 6-OH-(-)-clausenamide was calculated in the urine,feces and bile,separately.Results(-)-Clausenamide was recovered mostly(44%) from feces in 112 hours,7.1% was found from urine in 120 hours and 0.013% was detected from bile in 24 hours.The accumulative excretions of 6-OH-(-)-clausenamide were 0.92%,0.46% and 0.0003% of the administered dose from feces,urine and bile,respectively.Conclusion The major amount of(-)-clausenamide was recovered from feces after(-)-clausenamide was orally administrated to rats(30 mg·kg~-1).更多还原