Real acid reflux syndrome (which is, btw, much rarer than the TV commericals would have us believe) represents a serious problem, that should be treated by a doctor. Among other things, it can lead to ulceration of the esophagus---which is as uglier than it sounds.
If you're only talking about over-acidity, however, there are many herbal remedies. Among them:
Peppermint, catnip, fennel, sage, anise, and lovage. If you check herbals, just look at anything listed as a digestive, carminative, or, in some cases, anti-spasmotic.
Although tinctures are easier to use, tea can be more effective because it forces you to take those few minutes away from the job stress. A tea made from equal parts peppermint and catnip will both relieve the acidity and sooth the tummy. For a single serving, combine 1/2 tablespoon each in 1 cup boiling water. Let steep 15 minutes. Strain and drink. Adult dosage: Up to 5 cups daily.
Can't do much about preventing acidity caused by stress (short of changing careers). But as to the over-eating, well, there's a simple solution to that one. /img/vbsmilies/smilies/wink.gif