Does Lialda come in IV form?

No, they dont. For any of the UC medicines to work, they must be taken orally (b/c they work topically on the large intestine). Thus, taking it intravenously would be a moot point.

 However, if you cant swallow Lialda pills, try Pentasa. The pills can be opened up and sprinkled onto food (like
 applesauce or yougart). Pentasa has the same active ingrediant as Lialda.