what is ke in medication
Keflex Antibiotic. Keflex Â® (cephalexin) is a prescription medicine that belongs to a class of antibiotics called cephalosporins. It is approved to prevent heart valve infections and is also commonly used for treating bacterial infections, such as urinary tract infections and sinus infections. Keflex works by preventing bacteria from making and maintaining their cell wall. Without a cell wall, bacteria are vulnerable and ultimately die.