Yes, jojo - keep them in the fridge. I just got my first package of Canasa suppositories (same thing as Salofalk - mesalamine) and the storage directions in the pharmacy PI say to refrigerate (keep them between 36-77 degrees F / 2-25 degrees C).
It was "funny" when I picked up my Rx b/c the pharmacist couldn't find the package at first - they had stored them in the fridge there, too...