I do know they add ground black pepper to increase absorption in the NSI capsules.
I think the problems people are having with those capsules is from that black pepper extract "The most common side effects of piperine are gastrointestinal problems such as nausea, vomiting and diarrhea. Consuming excessive amounts of black pepper can irritate the stomach..."
None of the studies include black pepper.
And they aren't studying turmeric, only curcumin: http://www.youtube.com/watch?v=01PcxCgtgr4
Diet: rice, fish, olive oil
Supplements: psyllium husk capsules, Curcumin 95%
Medication: 1 Lialda daily