You may think that certain foods, stress or spices can cause stomach ulcers, but ulcers are not the result of your diet. Most ulcers are caused by an infection in the lining of your digestive system that erodes the protective lining. Vitamins do not cause stomach ulcers, but taking vitamins on an empty stomach if you have ulcers could trigger your symptoms. Drugs.com states that an upset stomach is a common side effect of taking vitamins but may not be related to an ulcer.
About Ulcers
Ulcers are open wounds that develop in your esophagus, stomach or small intestines. Your entire digestive system is lined with a mucous membrane that protects the soft tissue from interacting with digestive acids and chemicals. An ulcer forms when a portion of the lining is eroded, exposing the soft tissue. The tissues become inflamed and can bleed as a result of interacting with the harsh digestive chemicals. Taking vitamins may increase acidity, triggering stomach pain. Ulcers are commonly mistaken for heartburn or indigestion. This condition is treatable with a proper diagnosis, medications and lifestyle adjustments.
Stomach Ulcer Causes
The primary cause of stomach ulcers is the bacteria H. pylori. It's possible to carry the bacteria in your gut and never develop an ulcer. An ulcer only forms when the bacteria causes inflammation, disrupting the mucous membrane. A stomach ulcer caused by H. pylori is treated with prescribed antibiotics. Other less common cause of ulcers include the overuse of nonsteroidal anti-inflammatory drugs, such as aspirin or ibuprofen, daily use of alcohol and the use of tobacco.
Vitamin Side Effects
A common side effect of consuming vitamins is an upset stomach. You may be able to prevent this symptom by taking the vitamin with a meal or a glass of milk. An upset stomach may be a sign of an ulcer or another digestive condition. Common symptoms of an upset stomach include bloating, heartburn, nausea, burning stomach pain, burping and vomiting, according to FamilyDoctor.org. Stomach pain may also be the result of an intolerance or allergy to certain inactive ingredients in the vitamin supplement, such as eggs, wheat or dairy.
Considerations
If you develop other symptoms along with stomach pain or you notice blood in your vomit or stools, call your doctor immediately. Other conditions for your ulcerlike symptoms may include food allergies, irritable bowel syndrome, GERD or another inflammatory bowel disease.


