Cefalexin or cephalexin is a first-generation cephalosporin antibiotic. It is an orally-administered agent with a similar antimicrobial spectrum to the intravenous agents cefalotin and cefazolin. It is commonly marketed under the trade name Keflex or Sporidex . Cefalexin is used to treat urinary tract infections, respiratory tract infections , skin and soft tissue infections. Although it is not generally considered first-line treatment for any indication, it is a useful alternative...