Base salts
They contain alkali with a scale of pH 7.0
Bases neutralize excess stomach acid in antacids, relieving stomach pain.
antacids
Antacids are used to neutralize stomach acidity. You take antacids (such as Tums or Rolaids) when you experience heartburn or upset stomach.
Gastric acid inhibitors are medications that reduce the production of stomach acid. They are different from antacids, which act on stomach acid after it has been produced and released into the stomach.
Antacids contain compounds which neutralize the acids in the stomach.
Well actually they reduce stomach acid and it raises the pH to reduce the acidity in the stomach. It also relieves heartburn.
Calcium Carbonate Indigestion tablets (antacids) may contain: CaCO3, MgCO3, Al(OH)3, Mg(OH)2, NaHCO3, KHCO3, etc. All these substances dissolved make an alkaline solution - to neutralize the excess of hydrochloric acid from the stomach and to control of the gastric pH.
Antacids work only in the stomach and pylorus, where the powerful stomach acid secretions can cause irritation and damage to the tissues. Ordinary antacids neutralize some of this acid to reduce discomfort. However, damage (e.g. ulcers) can still occur. In the duodenum, basic secretions including bile from the liver neutralize the acid pH.
Stomach
Antacids are used to neutralize the acid in the stomach. They are commonly used to treat heartburn and indigestion. Some well known antacid brands include Alka-Seltzer and Tums.
Gastric pits are located in the stomach.