
NOT FOR INJECTION INTO THE EYE. If a sensitivity reaction to POLYTRIM® occurs, discontinue use. POLYTRIM® Ophthalmic Solution is not indicated for the prophylaxis or treatment of ophthalmia neonatorum.
There is currently no manufacturer warning information available for this drug.
POLYTRIM® Ophthalmic Solution is indicated in the treatment of surface ocular bacterial infections, including acute bacterial conjunctivitis, and blepharoconjunctivitis, caused by susceptible strains of the following microorganisms: Staphylococcus aureus, Staphylococcus epidermidis, Streptococcus pneumoniae, Streptococcus viridans, Haemophilus influenzae and Pseudomonas aeruginosa.1
POLYTRIM® (polymyxin B sulfate and trimethoprim ophthalmic solution, USP) is a sterile antimicrobial solution for topical ophthalmic use. It has pH of 4.0 to 6.2 and osmolality of 270 to 310 mOsm/kg.
Chemical Names:
Trimethoprim sulfate, 2,4-Diamino-5-(3,4,5-trimethoxybenzyl) pyrimidine sulfate, is a white, odorless, crystalline powder with a molecular weight of 678.72 and the following structural formula:

Polymyxin B sulfate is the sulfate salt of polymyxin B1 and B2 which are produced by the growth of Bacillus polymyxa (Prazmowski) Migula (Fam. Bacillaceae). It has a potency of not less than 6,000 polymyxin B units per mg, calculated on an anhydrous basis. The structural formulae are:

Contains: Actives: polymyxin B sulfate 10,000 units/mL; trimethoprim sulfate equivalent to 1 mg/mL. Preservative: benzalkonium chloride 0.04 mg/mL. Inactives: purified water; sodium chloride; and sulfuric acid. May also contain sodium hydroxide to adjust the pH.