Yes. It is a fairly common complaint for people on a poor diet
Gastritis, or inflammation of the stomach, may occur if there is too much hydrochloric acid in the stomach. Eventually a gastric ulcer may develop.
If there is too much stomach acid and not enough stomach mucus, ulcers may form on the stomach wall. Also, excess stomach acid may enter the esophagus through the cardiac sphincter and cause what is commonly known as heartburn.
bad
Generally, diluted hydrochloric acid. This chemical is used to help digest food in your stomach. Too much of it, however, can cause damage to the lining of your stomach and your esophagus. This can lead to frequent heartburn, otherwise known as acid reflux disorder.
antacid is usually flavoured calcium, which is an alkali/base. This reacts with the acid in the stomach to produce salt and water, relieving the distressing effects of too much acid. Antacids counteract with acids, neutralizing any excess acidity.
if there is too much acid in your stomach it bubbles up you oesaphagus (the tube from mouth to stomach ) and causes ingestion .
indigestion or dyspepsia is caused when a stomach acid enters your gullet.
Indigestion tablets contain an alkali which neutralizes the acid in your stomach. In digestion in primarily caused by too much acidic in the stomach.
Your saliva produces enzymes to break down food and your stomach has them too, but I am pretty sure that your stomach doesn't produce as much as your saliva.
Stomach pain is often the result of too much acid in your stomach. The acid is called hydrochloric acid. Magnesium Hydroxide is a base (the opposite of an acid) and it can counter the effects of stomach acid, possibly relieving stomach pain. The acid and the base neutralise each other, producing neutral substances.
you would get a stomach ach
MgO is basic oxide and neutralises stomach acid (too much stomach acid is the main cause of indigestion/heart burn)