I know it seems like I’m psychotic as I’ve seemingly responded to all your posts but I’m not. Your posts have resonated with me. I’ve had IBS way longer than Covid. I don’t want to ramble here so I am going to try and bullet point
1) I’ve been told by the medical community that opiods won’t touch nerve pain which I never believed but I never pressed because I knew I would be trading one disaster for another as my stomach can’t handle them.
2). Obviously this is my experience and I’m not a doctor but NO ONE INCLUDING ANY DOCTOR for 3 decades ever said B12 could help my severe constipation. I have been on B12 shots with the other needed supplements for 3 years as a remedy for neuropathy. It’s done nothing for my neuropathy but my constipation has improved significantly. Don’t know if oral would have helped me as I’ve only had B12 shots.

Anyway just sharing my journey in the hopes someone can get any relief from something in any area