The tromethamine salt form of fosfomycin, a synthetic broad-spectrum antibiotic. Fosfomycin tromethamine binds to and inactivates the enzyme enolpyruvyl transferase. This leads to an irreversible blockage of the condensation of uridine diphosphate-N-acetylglucosamine with p-enolpyruvate, which is one of the first steps of bacterial cell wall synthesis, thereby eventually causing cell lysis. In addition, fosfomycin tromethamine reduces the adherence of bacteria to uroepithelial cells. Check for active clinical trials using this agent.