Cephalosporins are a class of antibiotics that are commonly used to treat a variety of bacterial infections. They are derived from a fungus called Acremonium, and work by interfering with the bacterial cell wall synthesis, ultimately causing the bacterial cell to rupture and die. Cephalosporins are usually effective against a wide range of bacteria, including both Gram-positive and Gram-negative strains. They are typically prescribed for infections such as respiratory tract infections, skin infections, urinary tract infections, and certain types of meningitis. Cephalosporins are considered safe and well-tolerated by most patients, with relatively few side effects compared to other classes of antibiotics.