Generic Flexeril is a muscle relaxant. It works by blocking nerve impulses (or pain sensations) that are sent to your brain.
Generic Flexeril is used together with rest and physical therapy to treat skeletal muscle conditions such as pain or injury.
Generic Keflex is in a group of drugs called cephalosporin antibiotics. It is used to treat infections caused by bacteria, including upper respiratory infections, ear infections, skin infections, and urinary tract infections.