1818 -“there are physicians that feel that bacterial overgrowth is one of the main issues in IBS.”
Yes, this is one of the prevailing theories out there – amongst the movement theory of too fast or slow & too strong or weak. The small intestine is supposed to be relatively bacterial free -somehow bacteria is able to set up home there -so it’s not really “overgrowth”, just growth.
“There is an antibiotic called Rifaximin that has given some people significant relief.”
This is considered experimental -so you have to find a Doc who is treating with this.