Antibiotics for Helicobacter pylori

A combination is used because a single antibiotic may not clear the bacterium. The exact medicines depend on previous antibiotic exposure, allergies, local prescribing practice, and other health considerations.

Helicobacter pylori can live in the stomach lining and contribute to inflammation and ulcers. Antibiotics target the bacterium, while an acid-reducing medicine helps the stomach lining heal and supports treatment. Some regimens also include bismuth.

Side effects can include nausea, loose stools, altered taste, or stomach discomfort. Dark stools may occur with bismuth, but black, sticky stools accompanied by weakness or dizziness need urgent assessment because they can signal bleeding.

Follow the written schedule carefully and complete the prescribed course, even if symptoms settle early. Check whether each medicine should be taken with food, and ask a pharmacist what to do if you miss a dose. Do not double a dose unless specifically instructed.

Tell the prescriber about medicine allergies, pregnancy, breastfeeding, liver or kidney problems, and all medicines or supplements you use. A follow-up breath or stool test may be arranged after treatment to confirm that the infection has cleared; timing matters because some medicines can affect the result.

Seek urgent care for vomiting blood, black sticky stools, fainting, severe or worsening abdominal pain, trouble breathing, facial swelling, or a widespread blistering rash. Contact the prescriber promptly for severe diarrhoea, repeated vomiting, or side effects that prevent you from keeping the medicines down.

Ask which medicines make up your regimen, how they fit around meals, which interactions apply to you, and when testing should confirm clearance. Mention any antibiotic you have recently taken because that information can influence the chosen combination.