Drug Res (Stuttg) 2013; 63(11): 568-571
DOI: 10.1055/s-0033-1349125
Original Article
© Georg Thieme Verlag KG Stuttgart · New York

Relative Bioavailability Study of a New Medium/Long-chain Triglyceride Emulsion of Propofol in Beagle Dogs

W. Chen
1   Department of Anesthesiology, Zhongshan Hospital, Fudan University, Shanghai, China
Y.-Q. Cai
2   Department of Clinical Pharmacology, Shanghai New Drugs Research and Development Center, Shanghai, China
› Author Affiliations
Further Information

Publication History

received 20 March 2013

accepted 21 May 2013

Publication Date:
10 July 2013 (online)


The aim of this study was to evaluate the bioequivalence of a new generic formulation of propofol medium/long-chain triglyceride emulsion (test) and the available branded formulation (reference) to comply with regulatory criteria for marketing of the test product in China. This single-dose, randomized-sequence, open-label, 2-period crossover study was conducted in 6 beagle dogs. Blood samples were collected before dosing and at different time after dosing. Plasma samples were separated and assayed for propofol using a selective and sensitive HPLC method with fluorescence detection. The pharmacokinetic parameters AUC0-T, AUC0-∞, MRT, t1/2 and CL were determined from plasma concentration-time profile of both formulations. The formulations were considered bioequivalent when the 90% CIs of the geometric mean ratios (test:reference) for AUC0-T and AUC0-∞ were within the regulatory range of 80% to 125%.

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