Keflex is a brand name product for a common antibiotic called cephalexin. Learn more about this medication.

Most UTIs are not serious and are easily treatable, but some can lead to serious problems like kidney infections or bacteremia (when the microbes enter the bloodstream).

Cephalexin (brand name Keflex) is an antibiotic used to treat bacterial infections. Learn about some of the side effects of cephalexin, as well as some precautions while taking this medication.