Bacitracin Polymyxin B
Generic name: bacitracin zinc and polymyxin B sulfate
Dosage form: ophthalmic ointment
Drug class:Ophthalmic anti-infectives
Medically reviewed by Drugs.com. Last updated on Mar 22, 2022.
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Bacitracin Polymyxin B Description
Bacitracin Zinc and Polymyxin B Sulfate Ophthalmic Ointment, USP is a sterile antimicrobial ointment formulated for ophthalmic use.
Bacitracin zinc is the zinc salt of bacitracin, a mixture of related cyclic polypeptides (mainly bacitracin A) produced by the growth of an organism of the licheniformis group of Bacillus subtilis var Tracy. It has a potency of not less than 40 bacitracin units/mg. The structural formula for bacitracin A is:
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/mg, calculated on an anhydrous basis. The structural formulae are:
Each gram contains: Actives: Bacitracin Zinc equal to 500 bacitracin units and Polymyxin B Sulfate equal to 10,000 polymyxin B units; Inactives: Mineral Oil and White Petrolatum.
Bacitracin Polymyxin B - Clinical Pharmacology
Polymyxin B sulfate attacks gram-negative bacilli, including virtually all strains of Pseudomonas aeruginosa and Haemophilus influenzae species.
Bacitracin is active against most gram-positive bacilli and cocci including hemolytic streptococci.
INDlCATlONS AND USAGE
For the treatment of superficial ocular infections involving the conjunctiva and/or cornea caused by organisms susceptible to bacitracin zinc and polymyxin B sulfate.
