Bloody or black stool . Bloody vomit or vomit that looks like coffee grounds. The antibiotics used to kill H. pylori bacterium include metronidazole, tetracycline, clarithromycin, and amoxicillin. Avoiding tea, coffee, and caffeine -containing soft drinks. Avoiding alcohol .
Recurrent ulcers can lead to complications.
Contact your health-care provider right away if symptoms persist or recur or new symptoms develop. Perforation of the intestine and peritonitis . Bowel obstruction . Call your health care provider if ulcer symptoms worsen, do not improve with treatment, or new symptoms develop. The following symptoms can be life threatening.