Polyvinylpyrrolidone K90 can be utilized in the formulation of drug delivery systems, such as electrospun nanofiber membranes. When combined with iodine and other compounds, it serves as an effective wound healing promoter and disinfectant in both human and veterinary medicine. Additionally, Polyvinylpyrrolidone K90 stabilizes nanosuspensions by interacting with drug crystal surfaces and retains its binding after drying.