Beta-lactamase inhibitors have which of the following roles?

• A. They stop bacteria from destroying penicillin
• B. They kill bacteria directly
• C. They act as antibiotics themselves without penicillin
• D. They cause penicillin to degrade faster

Answer: (A)

Beta-lactamase inhibitors block the enzymes that bacteria produce to destroy beta-lactam antibiotics like penicillin. By inhibiting these enzymes, they protect penicillin from degradation, allowing the antibiotic to remain active and kill the bacteria. They are not antibiotics themselves and do not kill bacteria directly, nor do they cause penicillin to degrade faster. Instead, they are used in combination with penicillin to extend its effectiveness against beta-lactamase–producing organisms. Examples include clavulanic acid paired with amoxicillin and tazobactam paired with piperacillin.