I think Damiana speaks sense.
Also, I think that for as long as you're taking the supplements you don't know how your digestive system actually functions anymore. It might be scary, but would you consider coming off everything for a short period, just to see how you respond?
What's your IBS tendency?
“I'm glad mushrooms are against the law, because I took them one time, and you know what happened to me? I laid in a field of green grass for four hours going, "My God! I love everything." Yeah, now if that isn't a hazard to our country..."
― Bill Hicks
"Sometimes eating the wrong food with the right attitude is a better choice than eating the right food with the wrong attitude... That’s how powerful the mind and the heart can be in the healing process."
- Chris Kresser