Gas trapped in the chest area can be as alarming as it is painful. It isn't uncommon for chest gas pains to be severe enough to convince people that they're experiencing a heart attack. When gas moves from the stomach to the the chest, esophageal nerve endings become stretched, creating the extreme discomfort that causes some to panic.
The best way to alleviate chest gas pain is to ingest a substance that will eliminate it in the form of a belch or flatulence.
This is the easiest remedy of all. Drink a decent sized serving of an extremely carbonated beverage (i.e. club soda), and--preferably in private--let out a a tremendous burp. Gross as it sounds, you'll be relieving the gas congestion in your chest, and the relief will be almost immediate. The embarrassment of being somewhat ill-mannered by necessity shouldn't override removing the gas, and the pain, out of your system.
This remedy has been around for a long time. Add a few drops of peppermint, ginger, or cinnamon extract to a glass of water, and drink it. The phytochemicals in the extracts of these plants relax the esophageal muscles, making it easier for gas caught in the chest to escape in the form of a belch.
These extracts are available at health food stores, but are probably easier to procure from the baking supplies sections of major supermarkets.
Over-The-Counter Simethicone Products
Simethicone is an orally administered anti-foaming agent that merges small, hidden stomach gas bubbles--which can head to the chest and cause pain--into larger gas bubbles that can more easily be emitted. Structurally, simethicone is a mixture of polydimethylsiloxane and silica gel. It's the active ingredient in over-the-counter name-brand gas relief products such as Maalox Anti-Gas, Mylanta Gas, and Rolaids, and it's completely safe in recommended and appropriate doses.