Gas problem is one of the common problem and troubles a lot who suffer from it. I had this trouble last month. The problem was so troubling that I could not concentrate on my work and literally on anything.
I tried several churans, hing-goli, and avoided food that related websites say not to have. For example, restricted milk products, sprouts etc. Started taking a walk after dinner. But nothing gave permanent relief until by chance I found on Internet that homoeopathic medicice 'Nux Vomica' helps in eliminating this problem.
This medicine was available with me 200 potency. And you have to believe this that only one dose did wonders. I had a good night sleep. I took it for one day and the problem has gone forever.
If you have this problem then just try this medicine and be the part of miracle.