cephalexin dosage for sinus infection
Cephalexin is prescribed to treat respiratory tract, middle ear, skin, bone, and urinary tract infections (UTI). It's also used to prevent infections caused by streptococcal bacteria, including prevention of rheumatic fever.Cephalexin isn't recommended for sinus infections.Cephalexin is sometimes called a first-generation cephalosporin because it was one of the first cephalosporins developed and marketed.ere are general guidelines for cephalexin dosage: 1  The usual adult dose ranges from 1 to 4 grams a day, given in divided doses. 2  Typical adult doses of cephalexin are 250 mg every 6 hours, or 500 mg every 12 hours. 3  The usual dose for a child is 25 to 50 milligrams (mg) per kilogram of weight, given in divided doses.