How to avoid flatulence for about 3-4 hours. I mean completely avoid flatulence for these hours. No gas shouldn't pass through anus for these hours currently I am taking pantoprazole 1/2 hour before food and taking accharomyces boulardii powder after food. But that doesn't affect as I expect, I tried gelusil also. But gas comes even after taking gelusil. Please tell me which medicine should I take to avoid flatulence for 3 to 4 hours.