If penicillin is allergic, other antibiotics can be used for H. pylori infection, such as clarithromycin and metronidazole. Helicobacter pylori is also a kind of bacteria, so it is necessary to use more sensitive antibiotics to reduce inflammation, in addition to the available penicillin, in the clinic can also be used in the treatment of Clarithromycin, Metronidazole, Ornidazole and other medications, which are able to destroy the Helicobacter pylori bacteria, but the specific effect varies from person to person. If you are allergic to penicillin, try to go to the hospital for examination first, and the doctor will choose the best antibiotic according to the severity of each person’s condition and the diagnosis. In addition to the above antibiotics available, you can also use furazolidone and others. Treatment of H. pylori requires quadruple therapy, so in addition to antibiotics, combined proton pump inhibition, bismuth, and other medications such as pantoprazole, lansoprazole, and bismuth potassium citrate should be used as prescribed by the doctor. Helicobacter pylori is easily contagious, and relevant isolation measures should be taken after diagnosis to prevent spreading to others. Medication should be administered under the guidance of a doctor.