To neutralise excess acidity in the stomach, one can take:

To neutralize excess acidity in the stomach, one can take antacids like Mg(OH)2, which act as mild bases to counteract the acid. Stomach acidity is caused by the overproduction of Hydrochloric Acid (HCl). Antacids are basic in nature and undergo a neutralization reaction with the acid to produce salt and water, thereby providing relief from irritation. The reaction between stomach acid and magnesium hydroxide is expressed as: Mg(OH)2 + 2HCl → MgCl2 + 2H2O. Magnesium hydroxide is commercially known as milk of magnesia. Other common antacids used for this purpose include sodium bicarbonate (baking soda) and aluminium hydroxide.