In H. pylori eradication therapy, which regimen is used for patients with a penicillin allergy?

Prepare for the Adult-Gerontology Acute Care Nurse Practitioner Test. Study with interactive quizzes and detailed explanations. Boost your exam readiness with our diverse question formats and in-depth content coverage.

When a patient has a penicillin allergy, you avoid regimens that contain amoxicillin. A common, effective choice is a proton pump inhibitor plus clarithromycin plus metronidazole. The PPI reduces acid and enhances antibiotic activity, while clarithromycin and metronidazole attack H. pylori through different mechanisms, providing eradication without using penicillin. Be aware that local clarithromycin resistance can affect success, so alternatives (such as other non-penicillin regimens) may be considered in areas with high resistance. Regimens that include amoxicillin or other penicillins aren’t suitable for someone with a penicillin allergy.