Respiratory tract infections (RTI) are classified as infectious diseases of the upper or lower respiratory tract. The common RTI’s include the common cold, laryngitis, tonsillitis, rhinosinusitis and acute otitis media. Cephalexin, a first-generation semisynthetic cephalosporin antibiotic with a wide range of antibacterial activity and clinical applications, is most commonly used to treat such infections. Cephalexin...Continue Reading