2 Answers 2. The Kindle iphone app does not read pdf or epub files without conversion. There are various tools you can use to convert from pdf and epub to the mobi format that the Kindle app can read. The one I use is Calibre, and it works pretty well. Epub files generally convert without problem, but pdf files might be harder, depending on how complex the pdf is.
Irritation of the stomach from spicy foods, smoking, alcohol, or infection with a bacteria called Helicobacter pylori may all cause symptoms of indigestion, which might include excessive burping. Burping is rarely a sign of a serious medical problem.
If you suspect that certain foods in your diet are causing you to burp, make a point of writing down what you eat every day and when burping symptoms occur so you can narrow down what is causing the problem. Once you have found foods that seem to be the trigger, limit your intake of them to minimize burping.