Fast relief of acid indigestion. Fast relief: Laboratory tests show Di-Gel works in seconds to neutralize excess stomach acid. Calcium rich: Di-Gel contains Calcium Carbonate, an effective antacid that is also Calcium rich. In fact, two tablets contribute 22% of the U.S. recommended daily allowance of Calcium. Sodium free: Di-Gel is dietetically sodium free, an important benefit for those watching their sodium and salt consumption. Simethicone for gas: Di-Gel fights the acid and the gas, to give more relief than plain antacids. When excess acid forms in your stomach, it can give you acid indigestion, heartburn, and a sour stomach. Di-Gel fights the acid: Di-Gel Tablets' neutralizing action goes to work in seconds to provide you with fast relief of your acid indigestion, heartburn and sour stomach.