Cefixime is a third-generation cephalosporin antibiotic used to treat infections caused by bacteria in the ears, sinuses, throat, lungs, and urinary tract. It works by inhibiting cell wall synthesis in bacteria. Common side effects include diarrhea, nausea, vomiting, and skin rashes. There is no antidote for an overdose of cefixime, but gastric lavage may be performed. It was introduced by Wyeth pharmaceuticals and is now available generically from companies like Lupin in formulations such as capsules, suspensions, and dry syrups.