Endogenous substances and drugs that inhibit or block the activity of BETA-LACTAMASES.

Synonyms: Inhibitor, beta Lactamase, beta Lactamase Inhibitors, beta-Lactamase Inhibitor, Lactamase Inhibitors, beta, Inhibitor, beta-Lactamase, Inhibitors, beta-Lactamase, beta Lactamase Inhibitor, 0, Lactamase Inhibitor, beta, beta Lactamase Antagonists, beta-Lactamase Inhibitors, Antagonists, beta Lactamase, Lactamase Antagonists, beta, Inhibitors, beta Lactamase