gentamicin + ciprofloxacin + doxycycline

This is a combination of three antimicrobial agents: **gentamicin** (an aminoglycoside antibiotic), **ciprofloxacin** (a fluoroquinolone antibiotic), and **doxycycline** (a tetracycline antibiotic). These agents have **distinct mechanisms of action**: gentamicin inhibits bacterial protein synthesis by binding to the 30S ribosomal subunit; ciprofloxacin inhibits bacterial DNA gyrase and topoisomerase IV enzymes; doxycycline also inhibits bacterial protein synthesis via the 30S ribosomal subunit. While gentamicin + doxycycline is used in some infections such as brucellosis[2], and combinations like gentamicin + ciprofloxacin have been explored for synergy in severe Gram-negative infections[5][6], there is no widely used clinical product or recommended protocol that combines all three agents. Co-administration may be considered in rare or resistant infections when broad-spectrum and overlapping mechanisms are desired, but must be balanced with increased risk of toxicity and drug interactions. The combination is not associated with a unique brand or code name and is not a fixed-dose formulation.

Other names

gentamicin + ciprofloxacin + doxycycline