I found this Natural EsophaGuard from Life Extention. it works for acid reflex.
I will also try to purchase probiotic, and see how it will help me with my belching.
yes, i have the excate same bleching as you, a BIG BURP let out lots of air, and felt better. and also constantly burping, especially at night. :(
I have just started taking probiotics. They have seemed to help almost instantly. i was belching, vomiting and full of gas. i still don't think my digestive system is working quite right, but it is an improvement.
Have a breath test for H. pylori. This is, as I believe, the most common cause of chronic belching.