How effective is antibiotic treatment for Helicobacter pylori infection?

H. pylori treatment normally uses more than one medicine. Antibiotics target the bacteria, while an acid-reducing medicine helps the stomach lining heal and supports the treatment plan. The choice of antibiotics may change if you have taken them before, have an allergy, or live in an area where resistance is a concern.

Symptoms such as upper-abdominal discomfort, nausea or bloating may improve, but symptom relief alone cannot show that the infection has gone. A breath or stool test after treatment is used to check clearance, and the timing matters because some medicines can affect the result.

Take every dose at the times advised and finish the prescribed course, even if your stomach feels better. Ask the prescriber what to do if you vomit, miss a dose or develop diarrhoea. Tell them about allergies, pregnancy, regular medicines and any previous H. pylori treatment before starting.

Arrange the recommended follow-up test rather than assuming that improvement means clearance. If the infection remains, a clinician can select a different combination instead of repeating medicines without guidance.

Contact a clinician promptly for a spreading rash, facial swelling, breathing difficulty or severe diarrhoea during treatment. Seek urgent care for vomiting blood, black stools, fainting, severe or worsening abdominal pain, or trouble swallowing.

Ask which medicines you will take, how to space them around meals, when to test for clearance, and what symptoms should trigger a call. You can also ask whether previous antibiotic exposure changes the recommended combination.