Vaborbactam (formerly RPX7009) is a new beta-lactamase inhibitor based on a cyclic boronic acid pharmacophore. Vaborbactam is a highly active beta-lactamase inhibitor that restores activity of meropenem and other beta-lactam antibiotics in beta-lactamase-producing bacteria, particularly KPC-producing CRE. Meropenem in combination with vaborbactam (VABOMERE) is indicated for the treatment of patients 18 years and older with complicated urinary tract infections including pyelonephritis caused by designated susceptible bacteria. The vaborbactam component of VABOMERE is a non-suicidal beta-lactamase inhibitor that protects meropenem from degradation by certain serine beta-lactamases such as Klebsiella pneumoniae carbapenemase (KPC). Vaborbactam does not have any antibacterial activity. Vaborbactam does not decrease the activity of meropenem against meropenem-susceptible organisms.

Ceftolozane is a novel a cephalosporin-class antibacterial drug. In combination with a beta-lactamase inhibitor tazobactam (ZERBAXA, ceftolozane/tazobactam ) ceftolozane, is currently indicated for the treatment of the adult patients with complicated intra-abdominal infections caused by designated Gram-negative and Gram-positive microorganisms and complicated urinary tract infections caused by certain Gram-negative bacteria, including those caused by multi-drug resistant Pseudomonas aeruginosa. To reduce the development of drug-resistant bacteria and maintain the effectiveness of ZERBAXA and other antibacterial drugs, ZERBAXA should be used only to treat infections that are proven or strongly suspected to be caused by susceptible bacteria. Safety and effectiveness in pediatric patients have not been established.

Avibactam (formerly NXL104, AVE1330A) is a synthetic non-β-lactam, covalent, slowly reversible β-lactamase inhibitor that inhibits the activities of Ambler class A and C β-lactamases and some Ambler class D enzymes. The combination of ceftazidime with avibactam exhibited broad-spectrum activity against Ambler class A- and class C-producing Enterobacteriaceae. AVYCAZ is a combination of ceftazidime, a cephalosporin, and avibactam indicated for the treatment of patients with the following infections caused by designated susceptible microorganisms: Complicated Intra-abdominal Infections, used in combination with metronidazole and Complicated Urinary Tract Infections, including Pyelonephritis.

Tazobactam is a beta-lactamase inhibitor, which was approved by FDA for the treatment of wide range of bacterial infections either in combination with piperacillin (Zosyn) or with ceftolozane (Zerbaxa).

Sulbactam is a β-lactamase inhibitor given in combination with β-lactam antibiotics to inhibit β-lactamase, an enzyme produced by bacteria that destroys the antibiotics. Sulbactam in combination with semisynthetic antibiotic ampicillin sodium is indicated for the treatment of infections due to susceptible strains of the designated microorganisms: Skin and Skin Structure Infections caused by beta-lactamase producing strains of Staphylococcus aureus, Escherichia coli etc; Intra-Abdominal Infections caused by beta-lactamase producing strains of Escherichia coli, Klebsiella spp. (including K. Pneumoniae) tec; Gynecological Infections caused by beta-lactamase producing strains of Escherichia coli, and Bacteroides spp. (including B. fragilis).

Tazobactam is a beta-lactamase inhibitor, which was approved by FDA for the treatment of wide range of bacterial infections either in combination with piperacillin (Zosyn) or with ceftolozane (Zerbaxa).