That's not unusual. I find that as I age, my dietary requirements change, not always in compliance with my intestinal requirements. I may a bit special because I need the use of a rectal catheter. I noticed the other day that Tavist D had a time released component. Never had a problem with a cold pill, or any enteric-coated pill.
Some pills come out looking the same as when they went in.
I'd recommend another type of vitamin- not a long acting one. I'd be afraid they would get blocked. It's easier to get a block with an ileostomy than with a J-Pouch. That's great DJ, if I sleep I can achieve that. I would take it VERY slow Hartery for the first few months at least.