For the last 8 months I have put on about 8lbs, had severe constipation, abdominal bloating/pain. After a colonoscopy and hydrogen breath test I was advised I had a high overgrowth of bacteria in small intestine. Was put on Zelnorm for constipation & rifaximin (antibiotic). Zelnorm did not work, even after increasing. Drink citracel, prune juice, lots of water, fruit, fiber cereal--can't seem to get thinks moving. I have had fibro for past 7yrs. Take lots of meds which never made me this constip. any help would be appreciated.