I've been having a problem of excessive gas since a few days. After having my meals every night, my stomach feels bloated, heavy and I feel symptoms like nausea, rapid hearbeat, chest pain, abdominal pain etc. I get relief after about an hour of passing gas. I had this problem earlier as well. I had consulted three doctors and my reports read : Excess gases have been found in the colon. My problem had disappeared but now it's back. Also, I'm taking Pentosec DSR daily.