Acid reflux is a condition when your lower esophagus sphincter (LES) is not closing completely or relaxing more frequently than normal. This causes heartburn and burping.
There are couple simple methods to avoidÂ burping too much:
- Reduce carbonated soft drinks intake. Air in them will cause a lot of burping.
- Milk products can also cause burping.
- Cut down on caffeine. It relaxes LES.
Another cause for burping could be aerophagia. For more information on how to deal with it look at this aerophagia page