This is not only limited to pentasa, it's seems to be a mesalamine issue. I take Asacol and the same thing happens. I keep Clorox wipes at the ready. They take off the stains and keep things from getting permanant.
Dx with Crohn's Colitis July 2007
37 yr old working Mom with two beautiful little girls (2 and 4)
Prednisone (fingers crossed), 75 mg Mercaptopurine (6MP), 4.8g Asacol, lorazepam (1 MG), Vicadin, Imitrex and Ambien as needed
Other stuff: probiotics and folic acid