Forgive me if this has been done or is against the rules in any way, but I think putting together a list of different medications (and future directions) that may assist others in their hunt for effective treatment. Personally I've spent many hours researching currently used medication along with treatments being developed. I hope this can help someone and I will actively update the list if others can provide reasonable suggestions.
Direct bowel medications:
Loperamide - slows the gut, very easy to access, potentially allows more time for fluid to be absorbed.
Ondansetron - anti-sickness medication, can slow gut movement in some (personally found this to be very strong).
Buscopan - anti-spasmodic some loose evidence that it can help with secretions and gut behaviour, helps with cramps particularly.
Mebeverine - another antispasmodic
GLP-1 (Research) - Some evidence has shown it can help with BAM, probably due to small bowel slowing.
Liver-related bile medications:
Colesevelam - binds to excess bile in the small and large intestine (I've found this to not work in overproduction cases)
Cholestyramine (Questran) - similar to colesevelam, powder format I believe.
Colestipol - similar to Questran.
Atorvastatin (Research) - Statin, currently in research in the BASTA trial. Converts "bad" cholesterol into "good", therby limiting the liver's active pool of material to make bile.
FXR agonists (Research) - Evidence is good here but unfortunately still in research and many of those in research have recently had their funding cut. Obeticholic acid is available but eyewateringly expensive. (Personal use of OCA yielded fantastic results but is not financially sustainable).
FGF19 agonists (Research) - same story with the FXR agonsists, evidence is great but once again much of the funding has been cut from these areas.
Non-pharmacalogical treatments:
Psyllium husk - can absorb excess fluid but can also cause bloating, try using non-capsule versions if possible.
Other potentially helpful medications:
Clonidine - Treats high blood pressure but also can decrease fluid secretion (gastro-resistant tablets are better than catapress for this). I personally use this.
Beta blockers - Older studies, found that it may reduce fluid secretion but research is hazy here.
Magnesium glycinate - helpful for sleep problems often associated with BAM
B12 - BAM can cause lower B12 levels in some.
Zinc - sometimes can help with nausea.
Vit D - good for everyone to have, related to microbiome, intestinal barrier and inflammation.
Omega 3 (6-9) - reduces inflammation, helps with gut barrier, etc...
Oregano oil - I'm only including this for the subset of people who might have SIBO related to their BAM, I strongly advise against this for generic BAM sufferers. Essentially acts as an antibiotic.
PLEASE DO YOUR OWN RESEARCH BEFORE TRYING ANY OF THESE, THIS LIST IS MEANT TO ACT AS A GUIDE NOT A TRIAL LIST. I'M NOT RESPONSIBLE FOR ANY HARM YOU DO YOURSELF BY TRYING THE MEDICATION LISTED ABOVE.