Patients suffering from peptic ulcers should generally avoid foods that cause discomfort and extreme spikes in gastric or citric acid juices, including heavy spices, milk and alcohol, according to PubMed. Patients may want to avoid all beverages containing caffeine, including decaffeinated coffee.
Gastric, or peptic, ulcers are sores in the lining of the upper small intestine or in the stomach caused when damage occurs to the protective lining from digestive juices such as hydrochloric acid and pepsin, explains WebMD. The most common causes of peptic ulcers are H. pylori and the use of nonsteroidal anti-inflammatory drugs, also known as NSAIDs.
As of 2015, there isn't sufficient scientific evidence to indicate that patients suffering from gastric ulcers should follow restrictive diets, according to PubMed. They may need to make modifications to their regular diet in order to reduce the exacerbation of ulcer symptoms. Dietary fiber may help alleviate symptoms.
The size and frequency of meals may also play a factor in the production of increased acid secretion, states PubMed. Although more frequent meals spaced throughout the day may contribute to complications, in some cases of acute ulcers, patients report feeling better with a more frequent eating pattern. Large meals that cause stomach distention are not advised.