Pathoblockers weaken bacteria and inhibit their pathogenic effect. They might be used in the future where antibiotics have become ineffective.
More and more antibiotics become ineffective as bacteria develop resistances against them. Pathoblockers should present an alternative: Unlike antibiotics, they do not kill bacteria but block their pathogenicity; that is they prevent bacteria from harming their host. As they inhibit very specific processes, the pathoblockers developed so far are usually only effective against one particular bacterium.