I'm sure I wouldn't do well with a meal replacement drink but I do fine adding a plain (unflavored, unsweetened) brown rice protein powder to a smoothie. Sounds bad, I know, but it's really not. Since it isn't flavored you can add it to anything like oatmeal or whatever you can think of. I have friends who make cookies with it somehow.
I don't do we'll with soy or dairy, so that's why the rice is my powder of choice. I don't use it every day, just when I'm in the mood for a smoothie.
This way I'm getting real food, plus protein and not a bunch of unknown junk.
Edited to add:
You could easily add probiotics to this and I get it from vitacost.com
33, happily married, stay at home mom to boys, ages 4 & 7.
currently: mild flare and pregnant
UC (probably pancolitis, but no c-scope yet), dx'd 2006
-mainly whole foods diet, no caffeine, no wheat, eggs or soy
-Prayer! Asacol, Slippery Elm, D3, nicotine (e-cig), psyllium husk powder, L. Reuteri