SPL Set ID: 55426495-5fd1-44ca-afcc-ffbbb0a0a569

Ciprofloxacin and Dexamethasone Otic Suspension, USP contains the quinolone antimicrobial, ciprofloxacin hydrochloride, USP, combined with the corticosteroid, dexamethasone USP, in a sterile, preserved suspension for otic use. Each mL of ciprofloxacin and dexamethasone otic suspension, USP contains ciprofloxacin hydrochloride, USP (equivalent to 3 mg ciprofloxacin base), 1 mg dexamethasone, USP, and 0.1 mg benzalkonium chloride as a preservative. The inactive ingredients are acetic acid, boric acid, edetate disodium (as dihydrate), hydroxyethyl cellulose, sodium acetate trihydrate, sodium chloride, tyloxapol and water for injection, USP. Sodium hydroxide or hydrochloric acid may be added for adjustment of pH. Ciprofloxacin, a quinolone antimicrobial is available as the monohydrochloride monohydrate salt of 1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-7-(1-piperazinyl)-3-quinoline carboxylic acid. The molecular formula is C 17 H 18 FN 3 O 3 ·HCl·H 2 O. The molecular weight is 385.82 g/mol and the structural formula is: Figure 1: Structure of Ciprofloxacin Dexamethasone USP, (11β,16α)-9-fluoro-11,17,21-trihydroxy-16-methylpregna-1,4-diene-3,20-dione, is a corticosteroid. The molecular formula is C 22 H 29 FO 5 . The molecular weight is 392.46 g/mol and the structural formula is: Figure 2: Structure of Dexamethasone structure 1 structure 2