I use boswellia serrata. It works.
"The study, published in European Journal of Medical Research, explored the effects of boswellia on patients diagnosed with grade II and grade III ulcerative colitis. Subjects were given 350 milligrams of boswellia extracts three times a day for 6 weeks, after which researchers used microscopies of rectal biopsies and examined relevant blood parameters – including levels of leukocytes and esinophils – to determine the results.
They found that the boswellia group showed improvement in all parameters, with 82 percent going into remission, as compared to 75 percent for the sulfasalazine group. In other words, boswellia outperformed the pharmaceutical drug."