I am a 64-year-old male. I have recently been diagnosed with Crohns after an MRI scan. Although, I don't seem to have the symptoms that seem to be prevalent amongst Crohns sufferers. I would say my situation is very mild to the point of saying I thought I had just odd bad days with the tummy. Anyway, I have been prescribed 2 x 500mg twice a day of Pentasa. I am finding that this makes me fee not well,l very dizzy and groggy since taking them. I also have Ankylosing Spondylitis for 40 years. For the AS, I being treated with the Anti-TNF drug Embrel. My question is, would I be better off switching to an alternative Anti-TNF treatment such as Humirarather than taking Pentasa? As I'm already taking an Anti-TNF treatment. I understand that Humira is a very effective treatment for Chrons. I obviously want to keep my symptoms as mild as possible or and not let it get any worse. My next appointment is not for another month, but wanted to get as much info on the subject before asking the question. Any advice or info would be much appreciated. Thank you