Synergistic Effect of Metronidazole and Chlorhexidine against Growth: An In Vitro Study.

To evaluate the potential synergistic activity of metronidazole (MTZ) and chlorhexidine (CHX) against growth. Antimicrobial susceptibility tests of to MTZ and CHX were performed on in vitro serial 2-fold dilutions of MTZ (from 1 mg/mL to 0.015 mg/mL) and CHX (from 1 mg/mL to 0.