Quinolone dispersions

Abstract

Provided are new ophthalmologically suitable pharmaceutical compositions comprising an effective amount of a quinolone antibiotic, e.g., a fourth-generation fluoroquinolone, and an effective amount of an anti-inflammatory agent. In aspects, the anti-inflammatory agent is an anti-inflammatory steroid, NSAID, or a combination thereof. In aspects, compositions are stable suspensions, which maintain physical and chemical stability for extended periods of time (e.g., exhibiting no sustained flocculation, coagulation, or clumping after several months of storage under typical conditions). In aspects, compositions are suspensions including a suspension component comprising one or more suspension agents. In aspects, the suspension component includes an ionic suspension agent. In aspects, compositions also or alternatively comprise a non-ionic surfactant, non-ionic suspension agent, or both, or an agent providing both functions. In aspects, compositions further comprise a chelating agent/component. Further described are related compositions and methods of making and using such compositions, e.g., in treating or preventing of bacterial eye infections.