If dehydration happens in the upper part of the gastrointestinal tract, it can cause heartburn. This is a main thirst signal of the human body. Heartburn caused by dehydration can not be cured by antacids or tablet medications, and your body continues to suffer this pain because of water shortage.

Using antacids or pill medications to treat this condition can lead to stomach inflammation, duodenum, ulceration, hiatal hernia, and eventually cancers in the gastrointestinal tract involving the pancreas and liver.