WebMD indicates oral antibiotics prescribed for kidney infections include amoxicillin, ampicillin, ciprofloxacin, co-amoxiclav, pivmecillinam, levofloxacin, cefaclor and co-trimoxazole. These antibiotics are in pill form for patients to ingest for seven to 10 days, depending on the severity of the infection. Drugs.com states several brand names of the drug sulfamethoxazole/trimethoprim are used for kidney infections. This combination kills sensitive bacteria.
Drugs.com explains the sulfa drug combination comes in tablets that range from 160 milligrams to 800 milligrams. Larger-dose pills normally do not have to be taken as often as lower doses, depending on a doctor's recommendation. In severe cases, trimethoprim is taken intravenously every six to 12 hours for up to 14 days. Trimethoprim is dispensed at 8 to 10 milligrams per kilogram of body weight per day.
Oral antibiotics for kidney infections are designed for patients who are well enough to stay at home with an uncomplicated infection. These types of infections occur when a normally healthy person has a bacterial infection in the kidneys, according to WebMD. These oral medications are for the most common types of bacteria found in kidney infections.
Mayo Clinic explains the signs and symptoms of a kidney infection usually clear up within a few days of treatment. Patients should take the entire course of antibiotics as prescribed by a doctor to make sure the infection is completely eliminated from the body, and to prevent a recurrence of the infection.