Budesonide is a medicine that reduces inflammation. It works by calming or suppressing your body's immune system. It belongs to a group of medicines called corticosteroids, which are similar to the steroid hormones your body naturally makes.
Budesonide capsules are used in adults to ease flare-ups of some bowel conditions such as Crohn's disease and colitis. They decrease symptoms such as pain and diarrhoea. It doesn't cure these conditions.