BackgroundPlant-Derived Exosome-Like nanoparticles (PELNs) are vital bioactive vesicles from medicinal plants, containing protective flavonoids, polyphenols, alkaloids, terpenoids, saponins, polysaccharides, and microRNAs. These compounds play crucial roles in PELNs’ anti-inflammatory and other pharmacological effects. PELNs show promise as a treatment in animal experiments for ulcerative colitis (UC) due to their biocompatibility, low immunogenicity, and natural targeting abilities. This review