Phosphomycin, also known as Fosfomycin, is an antibiotic produced by Streptomyces fradiae. It is used to treat uncomplicated urinary tract infections and to reduce nephrotoxicity and ototoxicity of platinum-containing anti-tumor agents. It is used to study resistance proteins in Bacillus subtilis and Mycobacterium tuberculosis. It is a potential treatment for bronchiectasis.

Fosfomycin is a phosphoenolpyruvate analog. It irreversibly inhibits enolpyruvate transferase (MurA). Therefore, the producion of N-acetylmuramic acid, an essential element of the peptidoglycan cell wall is inhibited.

Phosphomycin calcium salt blocks the formation or N-acetylmuramic acid by inhibiting UDP-Nacetylglucosamine 3-enolpyruvate transferase (MurA).

Keep container tightly closed in a dry and well-ventilated place.