Aztreonam For Injection USP is a quick-action medication that is used to treat various bacterial infections. This injectable antibiotic functions by targeting gram-negative bacteria to inhibit the synthesis of bacterial cell walls which leads to bacterial cell death. It is highly effective against lower respiratory tract infections, urinary tract infections, skin and skin structure infections, intra-abdominal infections, and gynecological infections. The dosage and duration of treatment depend on the type and severity of the infection. Some of the common side effects of Aztreonam For Injection USP include diarrhea, vomiting, headache, rash, nausea, injection site reactions, severe allergic reactions, and liver problems.