Cefpodoxime is an oral third generation cephalosporin antibiotic. It is active against most Gram positive and Gram negative bacteria. Notable exceptions include Pseudomonas aeruginosa, Enterococcus, and Bacteroides fragilis. It is commonly used to treat acute otitis media, pharyngitis, and sinusitis. It also finds use as oral continuation therapy when intravenous cephalosporins (such as ceftriaxone) are no longer necessary for continued treatment. The cephalosporins, are a class of β-lactam antibiotics. ... An antibiotic is a drug that kills or slows the growth of bacteria. ... Gram-positive bacteria are those that are stained dark blue or violet by gram staining, in contrast to Gram-negative bacteria, which are not affected by the stain. ... It has been suggested that this article or section be merged into Gram staining. ... Subgroups Actinobacteria Aquificae Bacteroidetes/Chlorobi Chlamydiae/Verrucomicrobia Chloroflexi Chrysiogenetes Cyanobacteria Deferribacteres Deinococcus-Thermus Dictyoglomi Fibrobacteres/Acidobacteria Firmicutes Fusobacteria Gemmatimonadetes Nitrospirae Planctomycetes Proteobacteria Spirochaetes Thermodesulfobacteria Thermomicrobia Thermotogae Bacteria (singular: bacterium) are a major group of living organisms. ... Species P. fluorescens P. putida etc. ... Species Enterococcus is a genus of bacteria of the phylum Firmicutes. ... Otitis media (also known as glue ear) is an inflammation of the middle ear, usually associated with a buildup of fluid and frequently causes an earache. ... Pharyngitis is a painful inflammation of the pharynx, and is colloquially referred to as a sore throat. ... Sinusitis is inflammation, either bacterial, fungal, viral, allergic or autoimmune, of the paranasal sinuses. ... An intravenous drip in a hospital Intravenous therapy or IV therapy is the administration of liquid substances directly into a vein. ... Ceftriaxone (trade name Rocephin®) is a third-generation cephalosporin antibiotic. ...