www.ncbi.nlm.nih.gov said...
Budesonide (Entocort EC Capsules) is an oral corticosteroid with a high degree of topical activity and low systemic bioavailability (approximately 11%). The budesonide capsule has been formulated to dissolve in a pH dependent manner, delivering most of the drug to the ileum and ascending colon, areas of the intestine most commonly affected by Crohn's disease.
/www.ncbi.nlm.nih.gov/m/pubmed/12381231/ Sounds like it is ileum (junction of small and large intestine) for it's beginning release point and most is released right-side. If you have predominately left-side inflammation then go for steroid enemas.