TRIMETHOPRIM SULFATE AND POLYMYXIN B SULFATE

Trimethoprim Sulfate and Polymyxin B Sulfate Ophthalmic Solution is a sterile antimicrobial solution for topical ophthalmic use. Trimethoprim sulfate, 2,4-diamino-5-(3,4,5-trimethoxybenzyl)pyrimidine sulfate (2:1), occurs as a white, odorless, crystalline powder with a molecular weight of 678.72. The structural formula is as follows: 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 formula is as follows: Each mL contains: Actives: Trimethoprim Sulfate equivalent to Trimethoprim 1 mg (0.1%) and Polymyxin B Sulfate 10,000 units. Preservative: Benzalkonium Chloride 0.04 mg (0.004%). Inactives: Sodium Chloride, Sulfuric Acid and Sodium Hydroxide may be added to adjust pH (3.0 to 5.5), and Purified Water USP. Structural Formula Structural Formula

Trimethoprim Sulfate and Polymyxin B Sulfate 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 influenza and Pseudomonas aeruginosa. * *Efficacy for this organism in this organ system was studied in fewer than 10 infections.

Adults: In mild to moderate infections, instill one drop in the affected eye(s) every three hours (maximum of 6 doses per day) for a period of 7 to 10 days. Pediatric Use: Clinical studies have shown Trimethoprim and Polymyxin B Sulfate Ophthalmic Solution to be safe and effective for use in pediatric patients over two months of age. The dosage regimen is the same as for adults.

Trimethoprim Sulfate and Polymyxin B Sulfate Ophthalmic Solution is contraindicated in patients with known hypersensitivity to any of its components.

The most frequent adverse reaction to Trimethoprim Sulfate and Polymxin B Sulfate Ophthalmic Solution is local irritation consisting of increased redness, burning, stinging, and/or itching. This may occur on instillation, within 48 hours, or at any time with extended use. There are also multiple reports of hypersensitivity reactions consisting of lid edema, itching, increased redness, tearing, and/or circumocular rash. Photosensitivity has been reported in patients taking oral trimethoprim.

STORAGE: Store at 20° to 25°C (68° to 77°F) [see USP Controlled Room Temperature]. Protect from light. WARNING – KEEP THIS AND ALL DRUGS OUT OF THE REACH OF CHILDREN. Akorn Manufactured by: Akorn, Inc. Lake Forest, IL 60045 ATP00N Rev. 10/08 Relabeled by: Proficient Rx LP Thousand Oaks, CA 91320