I cured my IBS using a protocol I developed by gathering info and suggestions from a variety of resources. Basically, what I did was:
1) Eat very low fiber (in the beginning, as close to zero as possible, now less than 10g/day)
2) supplement with probiotics and fermented/cultured foods
3) drink lots of homemade bone broth
4) supplement with L-glutamine for about 2 months
5) eat smaller meals
It took several months for me to improve, but once I did, it was like being a new person. I had been Intermittent Fasting for months, sometimes eating just one huge meal per day. While I think the science behind IF is sound, and is great for people with functioning digestive systems, I was surprised to realize that eating too much at once was actually a big IBS trigger for me.
Now that I'm significantly improved, I find that my system can handle a little more than it used to. When I was having flares, eating dried fruit was a trigger, and so were berries or any fruit with the skin. Even pureed pumpkin made me stopped up and bloated, which in theory doesn't make sense, because supposedly soluable fiber is good for the system. But mine just couldn't deal with it then and it was a source of misery. Now, I can eat dried fruit, the occasional unpeeled fruit/veggie, and stuff like pureed pumpin is no longer a problem. Now that I'm functional, I don't avoid soluable fiber, but I do avoid insoluable fiber as much as possible.
Also, I used the Hydro-C supplement from the gutsense website. I was a little wary about trying yet another thing to ease my constipation that wouldn't work, but this was the one and only ting that ever worked for me. There was no bloating, cramping, or dependency. Healing your guts is a long process, and I found this stuff to be helpful in keeping things moving along during the process until I got to where I don't need to rely on it anymore. It works like clockwork for me, and since I now only tend to get stopped up when travelling, I bought an extra bottle to travel with, and it is such a lifesaver for me!