Does anyone else have a child taking Pentasa (5-ASA)? What has been others experience with this? They were going to discontinue it for us if Brian's last SED rate was 0-13. It was 14! So we had to continue it until our next visit in August. I've just noticed that most are on the TNF drug alone. Is Pentasa harmless... or could it be the culprit why we aren't adding on the pounds? My son isn't real hungry...he'll eat at meals and then snacks when I remind him.