Cephalexin is used to treat bacterial infections in many different parts of the body. It belongs to the class of medicines known as cephalosporin antibiotics. It works by killing bacteria or preventing their growth. However, this medicine will not work for colds, flu, or other virus infections. 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 is used to treat a wide variety of bacterial infections. Learn about side effects, drug interactions, dosages, warnings, and more. Easy-to-read patient tips for cephalexin covering how it works, benefits, risks, and best practices. Cephalexin 500 mg is considered a moderate-strength antibiotic that works well for many common bacterial infections. It belongs to the cephalosporin family and packs enough punch for most routine infections while causing fewer side effects than some stronger options. Learn about cephalexin usage and dosing. Read the latest news and reviews about the drug as well as potential side effects and popular alternatives. Find patient medical information for Cephalexin (Keflet, Keflex, Keftab) on WebMD including its uses, side effects and safety, interactions, pictures, warnings, and user ratings Cephalexin is a cephalosporin (SEF a low spor in) antibiotic. It works by fighting bacteria in your body. Cephalexin is used to treat infections caused by bacteria, including upper respiratory infections, ear infections, skin infections, urinary tract infections and bone infections. Cephalexin treats infections like strep throat, UTIs, and skin infections. Learn how it works, common dosages, and what side effects to watch out for. Cephalexin is used to treat certain infections caused by bacteria. Cephalexin is in a class of medications called cephalosporin antibiotics. It works by killing bacteria. Antibiotics such as cephalexin will not work for colds, flu, or other viral infections.