Some people find that lying on the right side makes reflux symptoms worse.
The position of the stomach can make it easier for acid to move toward the esophagus when you’re lying on your right side.
If you regularly experience nighttime heartburn, you could try switching to your left side and see whether your symptoms improve.
What Happens When You Sleep Flat on Your Back?
Sleeping completely flat can also be problematic for people with frequent nighttime reflux.
Without an elevated upper body, stomach contents may have an easier path
