Aspirin is a widely used medication that is known to cause ulcers in the stomach and small intestine. The symptoms of aspirin-induced ulcers can range from mild to severe and can include abdominal pain, nausea, vomiting, and bleeding.

Abdominal pain is the most common symptom of aspirin-induced ulcers [2]. The pain is usually described as a dull ache that is located in the upper abdomen. The pain may come and go and may be accompanied by bloating, gas, and a feeling of fullness.

Nausea and vomiting are also common symptoms of aspirin-induced ulcers [2]. These symptoms may be caused by the irritation of the stomach lining or by the release of certain hormones that are triggered by the presence of the ulcer.

Bleeding is a serious complication of aspirin-induced ulcers [1]. The bleeding may be slow and chronic or it may be sudden and severe. Signs of bleeding may include black, tarry stools, vomiting blood, or passing blood in the stool.

Other symptoms of aspirin-induced ulcers may include loss of appetite, weight loss, and fatigue [3]. These symptoms may be caused by the chronic inflammation and irritation of the stomach lining.

It is important to note that some people may not experience any symptoms of aspirin-induced ulcers [2]. This is why it is important to talk to your doctor if you are taking aspirin on a regular basis, especially if you have a history of ulcers or gastrointestinal bleeding.

Sources:
[1] Drug Patent Watch. Aspirin. Retrieved from https://www.drugpatentwatch.com/p/tradename/ASPIRIN
[2] Lanas, A., et al. (2014). Symptomatic and asymptomatic aspirin-induced gastroduodenal damage in patients with rheumatoid arthritis: a prospective, case-control study. BMC Medicine, 12(1), 36. doi: 10.1186/1741-7015-12-36
[3] Yeomans, N. D., & Lanas, A. (2003). Peptic ulcer and NSAID-induced gastric ulcer. Current Opinion in Gastroenterology, 19(6), 573-577. doi: 10.1097/00001574-200311000-00009