Yeah, i had heard about that and seen the commericial on TV about it.
The I read that opiate addicts are abusing Immodium AD, because the active ingredient in that is a small dose of an opiate to slow down the bowels.
Apparently if they ingest around 300 tablets, they can get their fix :O
I had my knee rebuilt a few years ago, was prescribed opiates. Thats how I found out. I turned to weed, whiskey and lots of ice after a couple days of no bowel movements.