The drug – a combination of beta-lactam antibiotic aztreonam with beta-lactamase inhibitor avibactam – is the first monobactam/β-lactamase inhibitor combination to be cleared in the US for ...

Medically reviewed by Corinne Savides Happel, MD If you have ever had an allergic reaction to penicillin, you may have been ...

The beta-lactam ring couples three carbons and a nitrogen, whereas the beta-lactone ring consists of three carbons and an oxygen. "They're essentially iso-electron; they look and smell the same ...