The nasal cavity (or nasal fossa) is a large air filled space above and behind the nose in the middle of the face.Each cavity is the continuation of one of the two nostrils.he nasal cavity (or nasal fossa) is a large air filled space above and behind the nose in the middle of the face.
Polymyxin B sulfate and trimethoprim (Polytrim) is an antibacterial eye drop prescribed to treat bacterial conjunctiivitis and blepharoconjunctivitis of the eyes. Side effects, drug interactions, pregnancy safety, dosage, and storage information should be reivewed prior to using this medication.
A wide range of antibacterial action is provided by the overlapping spectra of bacitracin, polymyxin B sulfate, and neomycin. Bacitracin is bactericidal for a variety of gram-positive and gram-negative organisms.