It does work to a point, but it restricts you to eating mostly boring foods. In the summer, a BBQ was a no go, as was chips at the seaside, but with the Colestyramine it helps so much but it is prescription only. You can take as much or as little as you need to get the the balance right, and as long as you take it at the right time you can pre-empt what food you're planning to eat etc.
This is the Test you'd need to have done -
https://www.guysandstthomas.nhs.uk/health-information/sehcat-study
The symptoms are so close to IBD and IBS, with IBD being ruled out easier with MRI and Colonoscopy and Bloods. Her consultant said that many BAM patients go undiagnosed as GPs tend to go straight for IBS treatments after IBD is ruled out. So they just sit on Loperamide to slow down their transit.
I'm a Crohn's patient, so we're doing well with Bowel conditions!