I use Gaviscon to releive the chest pains from acid reflux. Sometimes I have to take as many as 5 to do the trick. If I'm lucky, and catch it real early, eating a small amount helps; like a pudding cup or even a banana. If it comes about
while I'm sleeping, that is usually not the case.
If it is real bad (ignored it too long before acting), I have to take bicarbonate of soda in water. Use just a teaspoon in a small glass of water.