This invention relates to the use of 4-methyl-8-phenoxy-1-(2-phenylethyl)-2,3-dihydro-1H-pyrrolo[3,2-c]quinoline or a pharmaceutically acceptable derivative thereof in combination with another antimicrobial agent selected from the group consisting of a beta-lactam antimicrobial agent, mupirocin and chlorhexidine or a pharmaceutically acceptable derivative thereof, for the prevention and/or treatment of microbial infections.
