Improved Pharmacokinetics of Aceclofenac Immediate Release Tablets Incorporating its Inclusion Complex with Hydroxypropyl-β-Cyclodextrin

The present investigation reports the various pharmacokinetic parameters of immediate release aceclofenac tablets incorporating its inclusion complex with hydroxypropyl-β-cyclodextrin. The tablets were prepared using aceclofenac: hydroxypropyl-β-cyclodextrin in a 1:1 molar ratio by the direct compression method (TKN). The results were compared with those of the marketed brand (MKT) and pure drug (TAC). The P-values indicated that mean plasma concentrations were significantly different among all three formulations administered (P<0.05, P<0.01). TKN showed significantly higher plasma levels when compared to the pure drug (P<0.01). The Cmax and AUC_(0-∞) of TKN were significantly higher (P<0.05) compared to the pure drug and marketed formulation. Furthermore, the first-order overall elimination rate constant (K_el) of TKN was also significantly higher (P<0.05) compared to the pure drug and its marketed formulation. These results suggested that tablets prepared by incorporating the AC-HPβCD inclusion complex (TKN) would provide a more rapid onset of pharmacological effects in comparison to the marketed formulation and pure drug.