Abstract
The bioavailability of two dipyridamol tablet formulations of (Dipyridamole from Tolidaru and Persantin from Boehringer) was compared in 14 healthy male volunteers who received a single dose of 25 mg of the test (T) and the reference (R) products in a randomized balanced 2- way crossover design. Plasma samples were obtained over a 16 h interval and dipyridamole concentrations determined by HPLC with ultraviolet detection. The maximum plasma concentration (Cmax), area under the plasma concentration time curve up to the last measurable concentration (AUC0-t), as well as infinity (AUC0-∞), and the absorption rate (Cmax/AUC0-∞) were analyzed statistically under the assumption of a multiplicative model. The time to maximum concentration (Tmax) was analyzed assuming an additive model. The parametric confidence intervals (90%) of the mean values of the pharmacokinetic characteristics for T/R ratio were in each case well within the bioequivalence acceptable range of 80-125%. The test formulation was found bioequivalent to the reference formulation by the Schuirmann’s two one-sided t tests and by Wilcoxon Mann Whitney two one-sided tests procedure. Therefore, the 2 formulations were considered to be equivalent.
Keywords
Bioequivalent Pharmacokinetic parameters Comparative bioavailability Dipyridamole
Copyright
© 2022, Author(s). This open-access article is available under the Creative Commons Attribution 4.0 (CC BY 4.0) International License (https://creativecommons.org/licenses/by/4.0/), which allows for unrestricted use, distribution, and reproduction in any medium, provided that the original work is properly cited.