AZBoxer,
Welcome to the forum.
Many IBDers have major issues with malabsorption of nutrients, perhaps you're suffering from the same problem.
That's the reason I take liquid minerals and liquid vitamins, because the gut has nothing to break down hence taking away another step. When I was bleeding so heavily every BM, every day, the only thing that kept my blood work in great shape was the liquid minerals and liquid vitamins. My doctor was shocked the blood work always came back great.