Cephalexin 500mg is a broad-spectrum antibiotic belonging to the cephalosporin class, used to treat a variety of bacterial infections including respiratory tract infections, skin infections, urinary tract infections, and bone infections. It works by interfering with the bacteria’s cell wall formation, ultimately causing their death. Typically taken orally with or without food, cephalexin is well-tolerated, though some individuals may experience mild side effects such as nausea, diarrhea, or stomach upset. This medication should be taken exactly as prescribed by a healthcare professional to ensure its effectiveness and to prevent antibiotic resistance. Avoid using it for viral infections like colds or flu. Always complete the full course of treatment for optimal results.