In rats, celery extract showed protection against stomach ulcers; however, no study was done on humans.

Source: https://www.healthcanal.com/nutrition/diet/celery-juice-weight-loss

It is frequently exposed to many types of physical injuries or wounds, including cuts, scrapes, scratches, infections, and ulcers.

Source: https://phys.org/news/2023-12-sustainable-wound-hydrogel-based-seaweed.html

Now, contrary to a popular belief, capsaicin won’t cause stomach ulcers, but it can lead to cramping and pain in your stomach that can lead to nausea and vomiting.

Source: https://www.forbes.com/sites/brucelee/2023/09/09/14-year-old-dies-after-trying-the-paqui-one-chip-challenge/

Of the three, his ulcers have pained him most, keeping him out of night clubs where he once diligently pursued his favorite indoor sport of the rumba.

Source: https://theava.com/archives/231477

Poo of endangered species ‘could help fight against diabetic ulcers’

Source: https://www.independent.co.uk/news/uk/home-news/poo-endangered-species-zoo-diabetic-ulcers-b2414483.html

Pressure ulcers or bed sores happen.

Source: https://www.nhpr.org/health/2023-09-07/nh-nursing-homes-push-back-on-staffing-requirements-citing-labor-shortage

Roker underwent a nearly seven-hour emergency surgery to treat two bleeding ulcers.

Source: https://www.dailymail.co.uk/femail/article-11681127/Al-Rokers-wife-Deborah-Roberts-opens-died-internal-bleeding.html?ns_mchannel=rss&ns_campaign=1490&ito=1490

She required treatment for nine months and during the process she lost her hair, got shingles from an infection, had mouth ulcers that became so bad she couldn't drink water.

Source: https://www.dailymail.co.uk/femail/real-life/article-12245133/What-Hodgkins-Lymphoma-Melbourne-student-diagnosed-cancer-19-names-symptoms.html?ns_mchannel=rss&ns_campaign=1490&ito=1490

Take honey, which the ancient Greek physician Hippocrates claimed ‘cleans sores and ulcers, softens hard ulcers of the lips and heals carbuncles and running sores’.

Source: https://www.dailymail.co.uk/health/article-12325727/DR-MICHAEL-MOSLEY-Chat-neighbour-good-mental-health-theirs.html?ns_mchannel=rss&ns_campaign=1490&ito=1490

Take honey, which the ancient Greek physician Hippocrates claimed ‘cleans sores and ulcers, softens hard ulcers of the lips and heals carbuncles and running sores’.

Source: https://www.dailymail.co.uk/health/article-12325727/DR-MICHAEL-MOSLEY-Chat-neighbour-good-mental-health-theirs.html?ns_mchannel=rss&ns_campaign=1490&ito=1490

This is also true if you "keep getting mouth ulcers", or if they become "more painful or red", which can be a sign of a bacterial infection.

Source: https://www.express.co.uk/life-style/health/1740499/mouth-ulcers-symptoms-treatments

Viruses found in the poo of endangered animals could be used to treat diabetic foot ulcers, researchers have suggested.

Source: https://www.irishexaminer.com/world/arid-41230963.html