Thanks for the advice. I'll consider it. Yes, i have been diagnosed with IBS. I've done a stool sample, blood work, colonoscopy and two hydrogen bereath tests, one for lactose intolerance and one for small intestine bacterial overgrowth. The last one was negative, but i still think that i have some kind of dysbiosis in my bowels. I've heard about great smokies laboratory before and here in Holland we have a lab that works with them. The problem is that my insurance company doesn't cover the lab work from GDSL, so i'll have to pay for it myself.That's going to be difficult, because i'm a student. I'll see what i can do, because i'm getting tired of living with this gas. Do you know of other things i can try, except The Master Cleanse and Liver Flush ?