Normally, calcium tablets do not stimulate the stomach, so there is no need to worry too much about the long time to eat calcium tablets will stimulate the stomach, resulting in gastric ulcers. Although calcium tablets do not stimulate the stomach, some patients will suffer from gastrointestinal discomfort after taking calcium tablets, especially granular calcium, the main reasons include the following: 1, difficult to digest: discomfort after taking calcium tablets is not due to the stimulation of the stomach caused by the calcium tablet itself, but due to the granular calcium tablets are larger, and it is difficult for some patients to digest them after they have entered the stomach. 2, dyspepsia: it may be due to the fact that the calcium tablets are dissolved in the stomach, and the calcium carbonate will neutralize the gastric acid in the body. for calcium carbonate, calcium carbonate will neutralize the body of gastric acid, neutralization of gastric acid, generally can reduce the possibility of peptic ulcer, there may also be side effects, such as the need for more gastric acid to digest food, gastric mucosa dyspepsia reaction. Some patients who are uncomfortable taking granular calcium may be changed to calcium flushes or liquid calcium, which usually further minimizes adverse reactions. In the process of diet, usually supplemental calcium is more effective than taking calcium tablets, for example, drink more milk, eat more soy products, eat fish, shrimp and other foods with high calcium content, through the diet to supplement enough calcium supplements, and at the same time, more sunshine, more exercise, daily life to be regular, if dietary intake of calcium is not enough, then you need to take additional calcium supplements, you can appropriately reduce the stimulation of the calcium tablets to the stomach, usually the calcium tablets themselves do not have stimulation of the stomach.