How Long Does Pantodac L And Cremaffin Take To Treat Gastritis?

I am having gastritis in stomach. The symptoms are bloating of stomach and discomfort in general. It is difficult to walk after eating even a small quantity because of gas in stomach. Now I am being treated with a Pantodac L in the morning in empty stomach and cremaffin at bed time. How long you think it will take for cure of gastritis?