Which medications in the drug class Sulfonamides are used in the treatment of Acute Pyelonephritis?

Updated: Jul 01, 2021
  • Author: Tibor Fulop, MD, PhD, FACP, FASN; Chief Editor: Vecihi Batuman, MD, FASN  more...
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Sulfonamides such as trimethoprim-sulfamethoxazole(TMP-SMX) have bacteriocidal activity and are used in the treatment of pyelonephritis.

Trimethoprim-sulfamethoxazole (Bactrim, Bactrim DS, Septra, Septra DS)

This drug combination is designed to take advantage of the synergy between trimethoprim and sulfonamides. TMP-SMX activity covers common urinary tract pathogens, both aerobic gram-positive and gram-negative bacteria, except Pseudomonas aeruginosa.

Oral trimethoprim-sulfamethoxazole (160 mg/800 mg [1 double-strength tablet] twice-daily for 14 days) is an appropriate choice for therapy if the uropathogen is known to be susceptible. This agent has been given an A-I rating in the 2010 IDSA guidelines for treating pyelonephritis.

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