Hi,
thank you for your query.
it seems you are suffering from inflamatory bowel disease exactly Crohn's disease?.
Pentasa is a good choise for inflamation of
terminal ileum. but the natyre of disease is with periods of calm and periods of irritation.
symptoms like
blood in stool show that that your bowel is inflamated now .
so I would suggest to see your gastroenetrologist to rise the dose of pentasa or to add another drug.
All the best