"“Silver nanoparticles (Ag-NPs) have been known to have inhibitory and bactericidal effects. Resistance to antimicrobial agents by pathogenic bacteria has emerged in recent years and is a major health problem. …these [silver] nanoparticles were evaluated for their part in increasing the antimicrobial activities of various Antibiotics against Staphylococcus aureus and Escherichia coli. The antibacterial activities of penicillin G, amoxicillin, erythromycin, clindamycin, and vancomycin were increased in the presence of silver nano-particles (Ag-NPs) against both test strains. The highest enhancing effects were observed for vancomycin, amoxicillin, and penicillin G against S. aureus."