If a person is producing too much acid in the stomach, what can be done to stop it?

I don't know. I had hyperacidity when I was in college. Maybe it was a part of growing pains, but it only lasted a few months for me.

http://en.wikipedia.org/wiki/Hyperacidity

It says to take antacids, but I would maybe see the doctor to eliminate the other possibilities.

--EDIT-- by the way, I have blood type O, which produces more stomach acid than all other blood types. Besides antacids, I used to eat a large hamburger whenever the acid got particularly bad. Type O blood people have a genetic propensity to eat more meat than others, or at least their cave man ancestors did. Type O is the oldest blood type.

Hyperacidity, also known as acid dyspepsia or Amalpitta[1] is the condition of excreting more than the normal amount of hydrochloric acid in the stomach.

Some causes for hyperacidity are peptic ulcers, Gastroesophageal reflux disease, stomach cancer and certain types of diet that contains spicy food.

I know just a few of them.. Thanks a lot.