Cefepime is a broad-spectrum antibiotic belonging to the cephalosporin class. It is primarily used to treat serious bacterial infections, including those caused by Escherichia coli and Pseudomonas aeruginosa. Cefepime works by inhibiting bacterial cell wall synthesis, which ultimately leads to the death of the bacteria. This medication is typically administered intravenously or intramuscularly in a hospital setting. It is effective against both gram-positive and gram-negative bacteria, making it a valuable option for treating infections in patients with weakened immune systems or those undergoing surgery.