<p>This is a sterile ophthalmic suspension containing Loteprednol Etabonate (corticosteroid) and Gatifloxacin (antibiotic) for topical administration to the eyes.<br />
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<strong>Loteprednol&nbsp;</strong>are thought to act by the induction of phospholipase A2 inhibitory proteins, collectively called lipocortins. It is postulated that these proteins control the biosynthesis of potent mediators of inflammation such as prostaglandins and leukotrienes by inhibiting the release of their common precursor arachidonic acid. Arachidonic acid is released from membrane phospholipids by phospholipase A2.<br />
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<strong>Gatifloxacin:&nbsp;</strong>The antibacterial action of gatifloxacin results from inhibition of DNA gyrase and topoisomerase IV. DNA gyrase is an essential enzyme that is involved in the replication, transcription, and repair of bacterial DNA. Topoisomerase IV is an enzyme known to play a key role in the partitioning of the chromosomal DNA during bacterial cell division. The mechanism of action of fluoroquinolones including gatifloxacin is different from that of aminoglycoside, macrolide, and tetracycline antibiotics. Therefore, gatifloxacin may be active against pathogens that are resistant to these antibiotics and these antibiotics may be active against pathogens that are resistant to gatifloxacin. Gatifloxacin has been shown to be active against most isolates of the following organisms both microbiologically and clinically. Aerobic Gram-Positive Bacteria: Staphylococcus aureus Staphylococcus epidermidis Streptococcus mitis group Streptococcus oralis Streptococcus pneumoniae Aerobic Gram-Negative Bacteria: Haemophilus influenza.</p>