IN 2011, I WAS DIAGNOSED WITH COLLAGENOUS COLITIS AFTER HAVING HAD THE CAMERAS INTO THE TUMMY AND INTO THE BACK PASSAGE. I WAS PRESCRIBED ASACOL AND TOOK THEM FOR A WHILE WITH NOT THAT MUCH EFFECT, SO WITH THE DR'S KNOWLEDGE, I STOPPED TAKING THEM. I HAVE RECENTLY HAD A FLARE UP AND DECIDED TO GO BACK ONTO THE ASACOL TO SEE IF IT HELPED, BUT THE SYMPTOMS SEEM TO BE BETTER TOLERATED THAN THE TABLETS, AS THEY HAVE MADE ME FEEL SLIGHTLY NAUSEOUS AND VERY TIRED .. ARE THESE COMMON SIDE EFFECTS OF THE TABLETS/