Table 1.

Antibacterial activity of silver ions in combination with antibiotics.

Antibiotics		Organism	Culture Condition	Effects	References
ß-lactams	Ampicillin	E. coli	Laboratory medium	10-fold increase in antimicrobial activity	[3]
Quinolones	Ofloxacine, Nalidixic Acid, Norfloxacin	E. coli	Laboratory medium	10-fold increase in antimicrobial activity. MIC value decreased 10–25%	[3,4]
Aminoglycosides	Gentamicin	E. coli	Laboratory medium. Animal models	100-fold increase in antimicrobial activity. MIC value decreased more than 10-fold	[3,4]
		C. difficile	Laboratory medium	MIC value decreased 4-fold	[4]
	Tobramycin	E. coli., P. aeruginosa	Laboratory medium	MIC value decreased 10-fold (E. coli). 3-fold increase in antimicrobial activity (P. aeruginosa)	[4,23]
	Kanamycin Streptomycin	E. coli	Laboratory medium	MIC value decreased more than 10-fold	[4]
Spectinomycin		E. coli	Laboratory medium	MIC value decreased 2-fold	[4]
Vancomycin		E. coli	Laboratory medium. Animal models	10-fold increase in antimicrobial activity	[3]
Chloramphenicol		E. coli	Laboratory medium	MIC value decreased 1.5-fold	[4]
Ebselen		K. pneumoniae, A. baumanni, P. aeruginosa, E. cloacae, E. coli	Laboratory medium. Animal models	10-fold increase in MIC value	[20]
Polymixin B		E. coli	Laboratory medium	MIC value decreased 5- to 10-fold	[21,22]
Rifampicin		A. baumannii	Laboratory medium	MIC value decreased 5-10 fold	[21]
Tetracycline		E. coli (TetR)	Laboratory medium	MIC value decreased 2-fold	[3]