Because the etiology of inflammatory bowel disease (Crohn's disease an
d ulcerative colitis) remains unclear, the major objective of drug the
rapy is to suppress the symptoms of disease activity. Corticosteroids
are the most effective treatment in acute severe inflammation. Steroid
s are first administered in high doses, than reduced over a period of
6 weeks to a low maintenance dose and finally slowly tailered after 3
months. Aminosalicylates are effective in mild relapses, helpful in th
e maintenance therapy and may accompany corticosteroid therapy in acut
e severe inflammatory activity. Azathioprine represent a potential dru
g in complicated inflammatory bowel disease and offer a steroid-sparin
g effect. Metronidazol helps to close fistulas and their complications
. Therapeutic developments promise a new approach but require careful
prospective evaluation.