Fresh Polyalthia longifolia leaves were harvested from a fadama near Oil Village, Kaduna Refining and Petrochemical Company (KRPC). Analytical-grade aluminium chloride, potassium chloride, and sulphuric acid were sourced from the Department of Chemistry Laboratory, Kaduna State University. Drug-resistant strains of Staphylococcus aureus, Streptococcus spp., and Salmonella spp., were isolated and characterized at the Chemical Pathology, Haematology, and Microbiology Diagnostic Laboratory of Oxford Hospital, Makera, Kakuri, Kaduna State, Nigeria.