<p>Fosfomycin has in vitro activity against a broad range of gram-positive and gram-negative aerobic microorganisms, associated with uncomplicated urinary tract infections. Fosfomycin Trometamol is a phosphonic acid derivative. It is a synthetic, broad spectrum, bactericidal antibiotic for oral administration. The bactericidal action of Fosfomycin is due to its inactivation of the enzyme enolpyruvyl transferase, thereby irreversibly blocking the condensation of uridine diphosphate N-acetylglucosamine with p-enolpyruvate, one of the first steps in bacterial cell wall synthesis.</p>