 A green synthesis method using moosa-paradysiaca peel extract as a reducing and stabilizing agent was employed to produce iron oxide nanoparticles, which were characterized by FTR, XRD, DLS, SCM, EDX, and TM techniques. The synthesized nanoparticles exhibited magnetite, FE-304, and or magamite, GammaFe203, phases with an average particle diameter of 43.35 nm, and a polydispersity index of 0.612. SCM examination revealed aggregated formations, and these environmentally friendly iron oxide nanoparticles hold great promise for various biological applications, including drug delivery and antimicrobial uses. This article was authored by Esther Eurydia Acoria, Ada Erebo Eurydia, Rachel Opedo Koji, and others.