Buy an ozonator and ozonate 1 litre of water every morning and drink it on an empty stomach. This will introduce extra oxygen into the small and large intestine, which, I believe, will kill all bad bacteria, viruses, fungus and neutralise any other poisons. Do this for at least 2 months and I believe it will eliminate all gas. If you can not afford an ozonator, you can also use a few drops of food grade hydrogen peroxide in a glass of water. Drink this on an empty stomach every morning for a few months. I believe these are also cures for cancer. Cancer is anaerobic and can not live in the presence of oxygen. Ozone has three molecules of oxygen. I am not a doctor.