I also have IBS and found what works for me is Bran Bud cereal put 2 tablespoons of it in your cereal every morning and I have to say i go everyday now. Its like 5 dollars a box but last along time....
forgot to mention that i was waiting for people to come up to me and ask me when i was due because i look 4 month pregnant. Very frustrating!...
I also have SIBO and had taken 500mg for 2wks and then 200 for another 2wks. I have been eating Activia yogurt everyday prior to taking the pills. I feel so much better than i did. Have to say Still...