Are you using slo-FE? It's time-release and easier on the stomach. Iron had always upset my stomach, too, but the slo-FE doesn't. I wouldn't take more than 2 either, one is even enough for me. I would follow the label directions instead of the Web.
49 year old female attorney, diagnosed UC/pancolitis 1985, no surgery but much suffering. Asacol/5ASA 6x400 mg maintenance for 20+ years; use prednisone & Rowasa for flares.
August 2008 sought care of naturopathic doctor. Food sensitivity test showed wheat/gluten, other intolerances; eliminated wheat/gluten from my diet. Probiotics (Ultimate Flora, 50 billion).
Bad flare in March, seasonal? Back on prednisone, 40-30-25-20-15... Humira denied, started Remicade 4/12.