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A synthetic antibiotic, C13H17N5O8S2, that acts against a wide spectrum of gram-negative bacteria.

[Variant of azthreonam : az(o)- + threon(ine) (used as a template for the antibiotic's chirality) + (beta-lact)am.]
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Noun1.aztreonam - an antibiotic (trade name Azactam) used against severe infections; has minimal side effects
antibiotic, antibiotic drug - a chemical substance derivable from a mold or bacterium that can kill microorganisms and cure bacterial infections; "when antibiotics were first discovered they were called wonder drugs"
References in periodicals archive ?
If aztreonam lysine for inhalation (AZLI) is approved, the company plans to market it as Cayston, with a novel, portable handheld nebulizer that delivers the 75-mg dose in 2-3 minutes.
The Food and Drug Administration refused to approve the biotech company's experimental cystic fibrosis drug, aztreonam lysine. The FDA informed Gilead in a letter that the inhaled antibiotic couldn't yet be approved and an additional clinical study would be needed.