My story (yours may be different!):
ibs-D (with GERD) most of my life (over 65)---
Summer 2014 went off of ranitidine (Zantac) and went on "Fast Tract" diet....GERD at night gone in one week. Haven't needed an antacid since then, but still had ibs.
Because of these results got suspicious of SIBO (small intestinal overgrowth). Went to GI doctor and got tested....very positive SIBO....treated with antibiotics, probiotics and citrucelle....This helped a bunch, but did not control ibs-D completely....Had been taking enteric coated peppermint oil which helped only a small amount.
December 1, 2015 started taking ib-gard trying different schedules....Since January 1st, I have found something that works for me.
Briefly:
At least 30 min before solid food: 2 citrucelle tablets, 1 ib-gard, 1 VSL#3.. with circa 10 oz of water or tea...1-2 hours later (may have breakfast in between) I take a second ib-gard. I swear that I can feel its calming effect very quickly (within 1-3 hrs).
Through the day, I eat mindfully usually smaller meals....relatively lactose free & nothing deep-fried....Will take Beano and/or Lacto just before consuming if eating beans, cabbage family, a lot of carbohydrates, or dairy. Although not celiac, large amounts of cookies, brownies, ice cream, or cake cause issues.
30 mins before dinner I take 1 NOW brand enteric coated peppermint oil capsule.
At bedtime, I take one Gas-X (simethicone) and one Align tablet, and cranberry extract.
This is the best I've been in many years..
NOTES: Lotronex, lomotil, Levsin, Imodium and Pepto-bismol...all either made me feel lousy from side effects and/or did not work. Imodium and Zantac may have actually have contributed to my SIBO. I feel that I could not have gotten rid of the SIBO without the one course of antibiotics a year ago.