I'm currently taking Trimethoprim for a possible urinary/prostate/kidney problem and I'm told these are anti bacterial drugs?When I take 2x200mg I find it can constipate or at least slow my bowel down a lot.I have IBS on the D side.I googled SIBO and wondered if there maybe a connection to these anti bacterials helping my IBS symptoms,meaning a possible SIBO diagnosis?Any thoughts?If my urinary problem is diagnosed as a prostate or kidney problem it appears Ciproflaxcin is a popular treatment.This can also be used to treat SIBO according to an article I read.Am I clutching at straws here or is there some validity in my thoughts?Many thanks for the excellent advice I'm given on here and please feel free to post your thoughts or experiences.