I've got SIBO and dysbiosis in my large intestines as well. Also possible mast cell activation syndrome, pending one more test to complete the current diagnostic criteria. Note: use both bile acid malabsorption and bile acid diarrhea (BAM/BAD) as search terms. It gets referred to as either one depending on the source.

BAM/BAD is definitely associated with Crohn's:

>Bile acid malabsorption (BAM) is a common but an underestimated and often neglected sign of inflammatory bowel diseases (IBDs), especially those affecting the distal ileum. Clinically relevant BAM is most often present in patients with Crohn's ileitis and particularly in ileal-resected Crohn's disease patients. However, deterioration of bile acid (BA) metabolism occurs also in patients with IBD without ileal disease or in those in clinical remission, and the role of BAM in these patients is not well appreciated by clinicians.

https://pubmed.ncbi.nlm.nih.gov/25248001/

Here's a nice paper that does a good job of summarizing the state Crohn's + BAM/BAD research (aka a systematic review) as of 6 years ago:

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6191959/

Anecdotally, I found myrrh + frankincense (about 100 - 300mg of each) chewed up 15 minutes prior to meals and phosphatidylcholine aka sunflower lecithin (5-10g) added to one meal per day seemed to help. I wouldn't use the myrrh and frankincense on a long-term basis, I stopped after a month. But above all, consult your doctor or other certified and licensed healthcare professional before taking any medications and supplements, herbal or otherwise. Meds like this can fuck you up if you aren't careful! Actually, be careful with phosphatidylcholine as well. Although it has been shown in limited research to benefit IBD and other GI disorders, apparently high levels of some of it's downstream metabolites are associated with more severe symptoms.

Note: the dosages for frank and myrrh are for the whole resin, eg obtained from a trusted supplier of bulk herbs such as Herb Stomp. You can also use tinctures, although dosage may be different and they may be more or less potent and effective based on formulation.

Phosphatidylcholine and GI inflammatory disorders and IBD:

https://pubmed.ncbi.nlm.nih.gov/19594939/

>Results: Studies suggested that PC displays a significant effect in the treatment of IBD by modulating gut barrier function, remodeling gut microbiota structure, regulating polarization of macrophages, and reducing the inflammatory response.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3103094/

>Phosphatidylcholine has also been shown to have a cytoprotective role in the biliary epithelium and may reduce the cellular toxicity of bile acids

https://www.sciencedirect.com/science/article/pii/S002192582
0587875

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1774598/

Myrrh and frankincense in regards to inflammation and IBD:

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4950638/

>In conclusion, the results of the present study suggested that myrrh has potent therapeutic value in the amelioration of experimental colitis in laboratory animals by downregulating the expression of proinflammatory mediators and improving endogenous antioxidative activities.

https://www.nature.com/articles/srep15597

I also found glycine (30g+ / day), creatine (5-10g /day), and taurine (1.5g-3g / day) supplementation very helpful. Taurine and glycine are the primary amino acids used to conjugate bile, so they can in theory be helpful to a liver that's struggling to do it's job.

Creatine is incredibly restorative to the epithelium of the GI tract. A rather large study is currently being designed to investigate creatine as adjuvant therapy for IBD/Crohn's, and I suspect we will see a lot more discussion and research into this angle in coming years. Bodybuilders take all of these substances because they improve upon even a nearly optimal metabolism, so it's quite logical that they are going to yield benefits to people with severely impaired metabolic processes at least in some cases, if not most of the time.

Might be worth discussing pancreatic enzymes with your doctor. Lipase is critical to fat metabolism, so that's of course going to be relevant with BAM. The tricky part is that in cases of borderline/mild exocrine pancreatic insufficiency, the standard test they give (stool elastase) has only a 50% sensitivity (so false negatives half the time), and possibly even lower depending on the quality of the stool sample you provide. Depending on how chill your doctor is it might be one of those things to just try it out and see if it delivers significant benefit -- these aren't really risky meds since it's the exact enzymes your pancreas should be producing.

The problem is they aren't cheap. Getting this kind of help from medical professionals can be very difficult, sadly. You may be able to find OTC enzymes containing lipase, but as always talk to physician first, and you don't want an product that has everything under the sun in it, plus some random herbs added for no apparent reason (there's a lot of complete junk in the category of 'natural products' since it's basically unregulated medicine at this point).

B vitamins are also quite important to various processes in the liver, I believe including bile synthesis and/or reabsorption indirectly. It is a little more expensive, but well worth it to get a methylated b-vitamin (saves your body the metabolic cost of methylation after the fact). Important note, if you have intolerance to potatoes, which is not uncommon among GI patients, you may have to go out of your way to find one that isn't derived from potato - I have found one thanks to my naturopath if you are interested.

As an aside, potato intolerance is tricky to figure out. It's one of those ingredients that is used in tons of industrial food production processes and doesn't always show up on the label. For instance, the majority of foods 'fortified' by B-vitamins (bread, alcohol, nutritional yeast) and even most table salt (other than 'unrefined sea salt') have unlisted potato sufficient to trigger a reaction in a highly sensitive individual.

Good luck in your search for health and vitality (or at least a slightly less fucked up GI tract)!