I had never heard that Accutane could cause IBD. I took it (long ago, I guess before they knew) and was only warned of possible liver damage. This says four juries have found that it causes IBD.
http://www.pharmalot.com/2008/12/accutane-med-guide-may-have-been-inadequate/
"Other language in the medication guide that Accutane “could lead” to
serious health problems that “may not” clear up is “ambiguous,” Higbee
continued. Noting that four juries have found that Accutane causes IBD (back story),
Judge Higbee said, ” ‘could lead’ and ‘may not’ are just not direct
enough to render the warning adequate as a matter of law even if they
directly discussed IBD which they did not. Again, it may be adequate,
but it clearly is a jury question.”