There’s common misconseption that higher acid in your stomach causes acid reflux, however it is actually the oposite. There’s sphincter in your esophagus which contracts when there’s enough acidity and opens when there’s lack of. So when you are having bad reflux, try increasing your stomach acid by either chewing gum, eating sour or eating something bitter. Avoid drinking large amount of water after heavy meals, since you are diluting acid. Also less smoking and drinking helps (quitting smoking really helped for me. Those over the counter tablets containing carbonate salts actually make it even worse, since they neutralize stomach acid, when you want to increase it. Protein pump inhibitors, such as ranitidine block production of stomach acid completely, however it really messes up with your protein intake. Common pain killers, such as ibuprofen, aspirin mess with yiur stomach too