Silver has been shown to make bacteria more susceptible to antibiotics. Silver weakens bacterial cell membranes and induces a chain reaction which makes them vulnerable to other chemicals.
Silver has been known to have antimicrobial properties for centuries. Foe example, the the Phonecians stored water and other liquids in silver coated bottles to discourage contamination by microbes; and silver became commonly used in medical treatments, such as those of wounded soldiers in World War I, to deter microbial growth.
Silver helps antibiotics work better
Source: Digital Journal
Art and Science of Laboratory Medicine