Abstract

Research on bifendate intestinal absorption. The single passed intestinal backflow method was used. Bifendate with different concentrations, bifendate with and without 2,4-dinitrophenol, verapamil, and probenecid, and solid state of bifendate in different systems were studied. Change of concentration and the presence of energy inhibitor, P-glycoprotein inhibitor and multidrug-resistant protein inhibitor did not affect the K(a) of bifendate intestinal absorption; there were obvious differences among intestinal absorption of native drug, solid dispersion, and physical mixtures. The result indicated that the intestinal absorption mechanism of bifendate is passive transport. Solid state of bifendate in different systems could affect the intestinal absorption.

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