How can you tell the difference between excessive gas, and a healthy amount?

Gas: If you are continually passing gas rectally and have no difficulty passing it, I would consider that as having excessive gas. If you have frequent abdominal bloating and are unable to pass the gas rectally, you may not be forming excessive gas, but have a problem with gas entrapment in which case drinking hot water helps break it down. Taking simethicone after meals prevents gas buildup.