Yes, my Vit-D levels were not terribly low, but my GI's office tracks these things across patients and have found that patients do better above a certain level. I've just been taking Caltrate 2x/day but haven't had any bloodwork since I started a month ago. I also have low iron, apparently, but I can't tolerate iron pills, so I also opt for more iron-rich foods. My GI doesn't know that I rarely take the iron pills and my levels seem to fluctuate on their own.
22 y/o graduate student
(Mis)diagnosed with Crohn's June 2007, (Quasi)diagnosed with UC and IBS August 2010
Flare since March 2010
Currently: Lialda (4.8g), VSL #3, Canasa, Folic Acid, Vitamin D, Ferrous Sulfate, Fiber Supplement, B12 injections monthly
Previously: Imuran (Allergic), Asacol, Prednisone, Remicade, Humira