Which of the following type of medicine is used for treating indigestion?

Antacids are special types of drugs usually used to get relief from stomach aches. They are preferable to people suffering from indigestion, stomach ulcer and acid reflux. 

Antacids are relatively assembled salts and salt-like compounds which neutralize acids. Antacids are alkaline ions. Thus, they have the chemical ability to neutralize an acid. Antacids do not have any side effects for most recipients.