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Bioequivalence of Acenocoumarol in Chilean Volunteers: an Open, Randomized, Double-Blind, Single-Dose, 2-Period, and 2-Sequence Crossover Study for 2 Oral Formulations

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2012
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Sasso Aguirre, Jaime Alfredo
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Bioequivalence of Acenocoumarol in Chilean Volunteers: an Open, Randomized, Double-Blind, Single-Dose, 2-Period, and 2-Sequence Crossover Study for 2 Oral Formulations
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Author
  • Sasso Aguirre, Jaime Alfredo;
  • Carmona, P.;
  • Quiñones Sepúlveda, Luis;
  • Ortiz Olcay, Mario;
  • Tamayo Carrillo, Evelyn;
  • Varela Figueroa, Nelson;
  • Cáceres Lillo, Dante;
  • Saavedra Saavedra, Iván;
Abstract
The aim of this study was to compare the bioavailability of an oral formulation of the coumarin derivative-vitamine K antagonist acenocoumarol (Acebron TM 4 mg, Test) with the reference formulation (Neo-Sintrom TM 4 mg). We performed a single-dose, double-blind, fasting, 2-period, 2-sequence, crossover study design. Plasma concentrations of acenocoumarol were determined using a validated UPLC-MS/MS method. 24 healthy Chilean volunteers (11 male, 13 female) were enrolled and all of them completed the study. Adverse events were monitored throughout the study. The values of the pharmacokinetic parameters were (mean ± SD): AUC 0-24 = 1 364.38 ± 499.26 ngxh/mL for the test and 1 328.39 ± 429.20 ngxh/mL for the reference; AUC 0-∞ =1 786.00 ± 732.85 ngxh/mL for the test and 1 706.71 ± 599.66 ngxh/mL for the reference; C max =180.69 ± 35.11 ng/mL with a T max of 1.83 ± 0.95 h for the test and 186.97 ± 38.21 ng/mL with a T max of 2.19 ± 0.83 h for the reference. Regarding half life measurements, the mean ± SD of t 1/2 were 11.84 ± 4.54 h for the test and 11.08 ± 3.28 h for the reference. The 90 % confi - dence intervals for the test/reference ratio using logarithmic transformed data were 97.89– 100.87 %, 98.62–101.99 % and 98.64–102.38 % for C max , AUC 0-t(24) and AUC 0–∞ . There were no signifi cant diff erences in pharmacokinetic parameters between groups. The results obtained in this study lead us to conclude, based on FDA criteria, that the test acenocoumarol formulation (Acebron TM , 4 mg tablets) is bioequivalent to the reference product (Neo- Sintrom TM , 4 mg tablets)
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URI: https://repositorio.uchile.cl/handle/2250/129056
DOI: doi: 10.1055/s-0032-1316290
ISSN: 0004-4172
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Arzneimittelforschung. 2012 Aug;62(8):395-9.
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