I agree with the workup this far, as well as the recommendation for the colonoscopy.
Rifaximin is an antibiotic that has reasonable been shown to help with IBS. Repeating the course is not unreasonable.
However, if the symptoms continue, I would pursue the colonoscopy to exclude more serious causes of the symptoms.
I cannot comment on the Imodium (immodium) without evaluation. I would discuss this question with your gastroenterologist.
Followup with your personal physician is essential.
This answer is not intended as and does not substitute for medical advice - the information presented is for patient education only. Please see your personal physician for further evaluation of your individual case.
Kevin, M.D.
kevinmd_
The peppermint is a proven bacterial overgrowth killer, and the exzymes will help you digest your food.