The Medicine Guide by SIRI

Cefalexin (also spelled cephalexin ) is a widely used first-generation cephalosporin antibiotic . It’s commonly prescribed to treat bacterial infections, especially those involving the skin, respiratory tract, ears, bones , and urinary tract . In this post, I’ll break down the basics of cefalexin in a way that's easy to understand – whether you're a patient, a pharmacy student, or just curious about medications.  What Is Cefalexin? Cefalexin is an oral antibiotic that works by inhibiting bacterial cell wall synthesis , making it effective against many Gram-positive and some Gram-negative bacteria.  It’s commonly sold under brand names like Keflex , Cepol , and Sporidex . Indications (Uses) Cefalexin is used to treat: Skin and soft tissue infections (e.g. cellulitis, infected wounds) Pharyngitis and tonsillitis (caused by Streptococcus pyogenes) Otitis media (middle ear infection) Bone infections (e.g. osteomyelitis) Urinary tract infections (UTIs) D...