The stomach juices that force their way up into your esophagus can leave a sour or bitter taste in the back of your throat, according to a research published in the American Journal of Medicine.
If you experience problems breathing, especially if those problems get worse at night when you’re in bed, reflux may be to blame. When you lie down, the acid that is washing up into the esophagus can trigger a reflex that causes wheezing.
The acid can also go into airways and cause direct irritation, so you could be waking up choking and coughing.
Reflux can cause a narrowing of the throat due to damage and scarring, so food is actually being help up on its way down. This can feel like your food has grown claws and is raking at your throat as it heads toward your stomach.