Evaluation of In Vitro Toxicity of OrPhyllo™, a New Vehicle to Produce Orodispersible Films

Orodispersible films (ODFs) are advanced drug delivery systems that consist of thin, mechanically robust polymeric films designed to dissolve or disintegrate quickly in the oral cavity, facilitating local and systemic drug administration. Orphyllo™ is a novel ODF vehicle developed to enhance the stability and delivery efficiency of active pharmaceutical ingredients. This study aimed to assess the safety profile of Orphyllo™ through a comprehensive evaluation of its cytotoxicity and genotoxicity on human oral mucosa cell lines. The cytotoxicity was evaluated using (3-(4,5-Dimethylthiazol-2-yl)-2,5-Diphenyltetrazolium Bromide) MTT, Neutral Red Uptake (NR), and Lactate Dehydrogenase (LDH) assays, which tested the impact of Orphyllo™ at concentrations of 5.0% and 10.0% over 24, 48, and 72 hours. Results indicated no significant reduction in cell viability (<i>P</i> > 0.05), demonstrating the formulation's biocompatibility. To evaluate genotoxicity, the micronucleus test was performed, showing no significant increase in the frequency of micronuclei compared to the control group, thus indicating no DNA damage. Additionally, the Annexin/7-AAD assay was employed to assess apoptosis and necrosis, revealing no significant induction of cell death at the tested concentrations (<i>P</i> > 0.05). These findings highlight that Orphyllo™ presents, even at an early stage, the potential to become a promising vehicle for oral drug administration applications, with potential benefits in several therapeutic areas, especially for populations that require ease of administration.