Formulation and Optimization of Duloxetine Hydrochloride Buccal Films: in Vitro and in Vivo Evaluation

Overview

Journal Drug Deliv

Specialty Pharmacology

Date 2017 Nov 28

PMID 29172829

Citations 8

Authors

Amr Mostafa El Sharawy

Marwa Hassan Shukr

Ahmed Hassen Elshafeey

Affiliations

Soon will be listed here.

Abstract

Duloxetine hydrochloride (DH) is a serotonin-norepinephrine reuptake inhibitor (SSNRI) indicated for the treatment of depression. Duloxetine suffers from reduced oral bioavailability (≈50%) due to hepatic metabolism. This study aims to develop DH buccoadhesive films to improve its bioavailability. DH buccoadhesive films were prepared adopting the solvent casting method using hydroxypropyl methylcellulose (HPMC) and polyvinyl alcohol (PVA). The prepared films were evaluated for weight uniformity, drug content, surface pH, swelling index, mucoadhesion strength and drug release percentages. Accelerated stability and bioavailability studies in healthy human volunteers were also performed for the selected films. Results of the evaluation tests showed that the optimum physicochemical characters were obtained by the films prepared with 2% HPMC using 10% propylene glycol (F2 films). Accelerated stability studies revealed that DH showed proved stability throughout the experiment time. DH bioavailability from F2 films was determined and compared with that of the marketed oral capsules (Cymbalta 30 mg). The pharmacokinetic results showed that C for F2 was higher than the market product. In addition, ANOVA analysis showed that a T of F2 film was significantly lower, while, the AUC of F2 was significantly higher than that of Cymbalta capsules. The percentage relative bioavailability of DH from F2 was found to be 296.39%. Therefore, the prepared buccal films offer an alternative route for the administration of DH with the possibility of improving its bioavailability.

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