Most respiratory tract infections are caused by viruses. Bacterial respiratory tract infections are usually treated empirically with antibiotic therapy that targets the most probable causative pathogens. Recommended antibiotic regimens for outpatient treatment of some common respiratory tract infections are listed in Table 1 for adults and Table 2 for children.

The FDA has approved gepotidacin (Blujepa – GSK), a triazaacenaphthylene bacterial type II topoisomerase inhibitor, for oral treatment of uncomplicated urinary tract infections (uUTI) in female patients ≥12 years old who weigh ≥40 kg. Gepotidacin is the first triazaacenaphthylene antibiotic to be approved in the US.

Orlynvah (Iterum Therapeutics), an oral fixed-dose combination of the thiopenem antibacterial prodrug sulopenem etzadroxil and the renal tubular transport inhibitor probenecid, has been approved by the FDA for treatment of uncomplicated urinary tract infections (uUTIs) caused by susceptible isolates of Escherichia coli, Klebsiella pneumoniae, or Proteus mirabilis in women who have limited or no alternative oral antibacterial treatment options. It is the first oral penem-containing product to be approved in the US.

The FDA has approved two antibiotics, gepotidacin (Blujepa — GSK) and zoliflodacin (Nuzolvence — Entasis), for oral treatment of uncomplicated urogenital gonorrhea in patients ≥12 years old. Gepotidacin is approved for use in persons weighing ≥45 kg who have limited or no alternative treatment options; it was approved in 2025 for treatment of uncomplicated urinary tract infection in females. Zoliflodacin is approved for use in persons weighing ≥35 kg. Neither drug is indicated for treatment of rectal or pharyngeal gonorrhea.

This article includes recommendations for management of most sexually transmitted infections (STIs) other than HIV and viral hepatitis. Some of the indications and dosages recommended here have not been approved by the FDA (see Table 1).

The FDA has approved Exblifep (Allecra), a fixed-dose combination of the cephalosporin cefepime and the beta-lactamase inhibitor enmetazobactam, for IV treatment of adults with complicated urinary tract infections (cUTIs), including pyelonephritis, caused by designated susceptible microorganisms (see Spectrum of Activity). Exblifep is the first product that contains enmetazobactam to be approved in the US.

The FDA has approved Emblaveo (Abbvie), an intravenously administered fixed-dose combination of the monobactam antibacterial drug aztreonam and the beta-lactamase inhibitor avibactam, for use with metronidazole to treat complicated intra-abdominal infections (cIAIs) in adults.

Ceftobiprole medocaril sodium (Zevtera – Innoviva Specialty Therapeutics), a new IV cephalosporin antibacterial drug, has been approved by the FDA for treatment of Staphylococcus aureus bacteremia (SAB), including right-sided infective endocarditis, acute bacterial skin and skin structure infections (ABSSSIs), and community-acquired bacterial pneumonia (CABP) (see Table 1). It is the second cephalosporin with activity against methicillin-resistant S. aureus (MRSA) to be approved in the US; ceftaroline (Teflaro), which was approved for treatment of ABSSSIs and CABP in 2010, was the...

Clostridioides (formerly Clostridium) difficile infection (CDI) is the most common infectious cause of healthcare-associated diarrhea in adults. Guidelines on management of CDI have recently been updated.

Gastroesophageal reflux disease (GERD) is the most common GI condition encountered in the outpatient setting; it affects about 20% of people in the US.