Hi. Pentasa is another 5 asa drug like Colazal or Lialda -- I just heard from my doctor that it "delivers" differently -- I'm not sure what this means. I'm not sure how much it is helping me. I take 9-12 pills a day, but I still have minor bleeding and my stool are not normal when I do not incorporate diet. I am doing the IBD Remission diet now, by Jini Patel, which is a liquid diet designed to give you a bowel rest. I hope this one works!