Absence of Effect of Propoxyphene on Antipyrine Kinetics in the Rabbit

Abstract

The effect of propoxyphene on the elimination kinetics of antipyrine was examined in New Zealand white rabbits. Serum concentrations of antipyrine were measured by high-performance liquid chromatography (HPLC). No significant alterations in the elimination half-life, apparent volume of distribution or total plasma clearance of antipyrine were observed with propoxyphene pretreatment. These results are in contrast to the reported impaired clearance of antipyrine by propoxyphene in man.