Cephalexin is an antibiotic used to treat various infections, including strep throat and staph infections. The standard dose of cephalexin is highly dependent on patient characteristics and the type of infection being managed, but typical doses are 500 mg twice daily or 250 mg every six hours. Overview: Cephalexin is antibiotic that is used to treat infections caused by certain bacteria. It blocks the bacteria's ability to make their cell wall, which they need to survive. Detailed Cephalexin dosage information for adults and children. Includes dosages for Bacterial Infection, Cystitis, Skin or Soft Tissue Infection and more; plus renal, liver and dialysis adjustments. Cephalexin is used to treat a wide variety of bacterial infections. Learn about side effects, drug interactions, dosages, warnings, and more. Cephalexin is a type of cephalosporin antibiotic that treats bacterial infections. You can take this medication by mouth at the same time every day and follow the instructions on the label. Cephalexin oral capsule is a prescription drug used for certain bacterial infections. Learn about side effects, uses, dosage, and more. Learn about cephalexin usage and dosing. Read the latest news and reviews about the drug as well as potential side effects and popular alternatives. Cephalexin is a cephalosporin antibiotic used to treat bacterial infections like respiratory, skin, ear, urinary tract, and bone infections in adults and children. Cephalexin is used to treat bacterial infections in many different parts of the body (eg, bones, ears, lungs, skin, urinary tract). Cephalexin belongs to the group of medicines known as cephalosporin antibiotics. Cefalexin, also spelled cephalexin, is an antibiotic that can treat a number of bacterial infections. [4] It kills gram-positive and some gram-negative bacteria by disrupting the growth of the bacterial cell wall. [4].