Development and Characterization of Viburnum opulus L. Extract-Loaded Orodispersible Films: Potential Route of Administration for Phytochemicals.

Purpose: Viburnum opulus L. fruits have been used in traditional medicine in the Turkish population for kidney problems, hypoglycemic and cough relaxant activities. This study aimed to prepare V. opulus extract-loaded orally disintegrating films (ODFs) to enhance oral absorption and improve patient compliance. Methods: ODF formulations were prepared using the solvent casting method. Carboxymethyl cellulose (0.5%, 1%, 1.5% w/w) and chitosan (0.5%, 1%, 1.5% w/w) were selected as film-forming polymers and glycerol was utilized as a plasticizer. Chlorogenic acid is the major metabolite of V. opulus fruits. The chlorogenic acid content in formulations and the plant extract was measured using high-performance thin-layer chromatography (HPTLC). Characterization studies on the formulations such as elongation at break, tensile strength, Young's modulus, DSC, SEM, and FT-IR were conducted. Bioadhesion, in vitro disintegration, and in vitro release studies were performed. Results: Desired mechanical and morphological properties were obtained for ODFs. Disintegration times (15.38 ± 0.88 s) and release studies (85.19% at 30 min) showed that the 0.5% chitosan films were the most convenient formulation for delivering V. opulus extract. Conclusion: ODFs were evaluated as a smart delivery route for phytochemicals avoiding any gastrointestinal effects and enhancing oral absorption. [ABSTRACT FROM AUTHOR]