I was able to cease taking a gut motility drug (prucalopride) which I also had to combine with a fiber supplement to get manageable bowel movements (which is to say: no bloating, cramping and other non-specific pain most weeks).

I still have issues from time to time, but I'm now also off the fiber supplements entirely as well (some dietary changes probably helped there as well - I cut out almost all sugar).

To explain the change: I had weeks where I'd have to take 2-3 movicol satchets a day to try and alleviate the pain: after about 3 months.

Ruteri is a patented strain that secretes a protein which helps other good bacteria colonies your gut. That plus a more complete probiotic plus another product Candex can really help your gut biome. Candex is enzymes that dissolve yeasts, which have become a big gut health issue over the last 80 years. Two major brands of probiotics are primadophilus, who have ones with Reuteri and another Jarro-dophilus, which is a collection claimed to reduce putrative bacteria. Finally the ancient Japanese super food Miso prepared at temperatures which keep it alive help colonize with a biome that digests all vegetable protein nearly fully.

Probiotics are fiber or long sugars which yeasts can't digest. The big issue nowadays is yeasts and leaky gut. The herbicide Roundup is suspected as a cause of leaky gut syndrome. Avoiding non organic wheat and non organic oats can help while you heal. Going to spelt bread or at least organic can help the gut heal. Using other grains like rice and others can help. Unless diagnosed as gluten intolerant or actually having Celiac disease skip the gluten free breads just avoid non organic wheat & non organic oats while you heal. Once your gut heals you can slowly relax those restrictions.