Levonadifloxacin (arginine) hydrate is a broad-spectrum anti-staphylococcal agent. Levonadifloxacin (arginine) hydrate shows antibacterial activity against Methicillin -susceptible Staphylococcus aureus (MSSA) and Methicillin -resistant S. aureus (MRSA) strains, with a reduction of which phagocytized in THP-1 monocytes.