If you have been told to administer vicous lidocaine and it relieved you of symptoms 5 to 10 minutes after the administration, it is very likely that the heartburn is esophageal in origin. But, you still have to keep in mind that this does not rule out that it can be caused by heart related illnesses or diseases. Effective Ways to Prevent Heartburn during Pregnancy Heartburn is one of the oldest and also one of the most common conditions that affects millions of people every single day. Despite its name, heartburn is in no way related to the heart. In fact, this is a digestive condition where stomach acid comes in to contact with the esophagus causing irritation. Your chest feels like it s on fire and the pain is radiating from your diaphragm to your throat. The pain is accompanied by a bitter or sour taste and you feel as if food is reentering your mouth. What you just experienced is a severe case of heartburn. Although the name suggests that it may be related to the heart, you have to remember that heartburn has nothing to do with the heart. By knowing about the different reasons that causes heartburn, you will be able to know how to prevent it from happening or at least take control of it. One of the main causes of heartburn is the weakening of the sphincter. Basically, the sphincter acts as a valve that prevents stomach acid from reaching the esophagus. For starters, heartburn happens when the stomach acid refluxes or backs up in to the esophagus. This can happen because of several reasons. The first reason is that the lower esophageal sphincter or LES is weakened or relaxed and doesn t do its job properly. Basically, the LES is the valve that keeps the stomach acid in the stomach. The fifth is to drink plenty of water instead of drinking carbonated drinks. Carbonated drinks increase the amount of gas in the body, which will eventually put pressure on the stomach. On the other hand, water does not and it will help flush down stomach acid. The sixth way is to drink a cup of green tea every day.