Fluorescence detection of tramadol in healthy Chinese volunteers by high-performance liquid chromatography and bioequivalence assessment
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ID: 100970
2015
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Abstract
Xiao Zhou, Ji Liu Department of Anesthesia, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, People’s Republic of China Abstract: This study developed a revised high-performance liquid chromatography fluorescence method to determine plasma tramadol concentration, and thereby to examine the bioequivalence of two tramadol formulations among healthy male Chinese volunteers. The study used a double-blind, randomized, 2×2 crossover-design principle. Calculated pharmacokinetic parameters for both formulations were consistent with previous reports. According to the observation of vital signs and laboratory measurement, no subjects had any adverse reactions. The geometric mean ratios (90% confidence interval) of the test drug/reference drug for tramadol were 100.2% (95.3%–103.4%) for the area under the plasma concentration–time curve (AUC) from time zero to the last measurable concentration, 99.6% (94.2%–102.7%) for the AUC from administration to infinite time, and 100.8% (93.1%–106.4%) for maximum concentration. For the 90% confidence intervals of the test/reference AUC ratio and maximum concentration ratio of tramadol, both were in the acceptance range for bioequivalence. According to the two preparations by pharmacokinetic parameter statistics, the half-life, mean residence time, and clearance values showed no significant statistical differences. Therefore, the conclusion of this study was that the two tramadol formulations (tablets and capsules) were bioequivalent. Keywords: tramadol hydrochloride, in vitro release, pharmacokinetic, bioequivalence, fluorescence detector
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| Authors | X, Zhou;J, Liu; |
| Journal | Drug design, development and therapy |
| Year | 2015 |
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