Recent developments in nanofiber-based fast-disintegrating drug delivery systems

Introduction: Fast-disintegrating electrospun fibers are emerging as innovative systems for oral drug delivery. These fibers possess a high surface area, porosity, and customizable hydrophilicity, which facilitates quick drug release by disintegrating rapidly in biological fluids or upon contact with water. Areas covered: Hydrophilic polymers and cyclodextrins (CDs), either separately or in combination, are frequently utilized to accelerate the disintegration of electrospun fibers, enhance the solubility of hydrophobic drugs, and improve drug bioavailability, leading to better therapeutic outcomes. Toward this goal, a systematic literature search was conducted to identify experimental studies (2019–2025) in Web of Science, Google Scholar, and Scopus using the keywords (‘fast-disintegrating’ OR ‘fast-dissolving’) AND (‘electrospinning’ OR ‘electrospun’) AND (‘delivery’ OR ‘release’). Expert Opinion: This review examines recent advancements over the past five years in the development of fast-disintegrating drug delivery fibers. It analyzes fiber composition, structural modifications, drug encapsulation routes, and their impact on drug release for oral mucosal delivery. Additionally, it addresses the challenges faced and outlines future directions in the field.