Fosfomycin 3gm sachet is an antibiotic used to treat bladder infections, particularly uncomplicated urinary tract infections (UTIs) caused by bacteria such as Escherichia coli and Enterococcus faecalis. It works by inhibiting the bacterial cell wall synthesis, a critical process for bacterial growth and survival. Buy fosfomycin online at dosepharmacy. Specifically, fosfomycin blocks an enzyme called enolpyruvyl transferase, which is essential for producing peptidoglycan, a key component of the bacterial cell wall. Without a functional cell wall, the bacteria cannot maintain their structure and die. This single-dose antibiotic is particularly useful for treating acute cystitis in women, providing relief from symptoms like pain and frequent urination.