A Controlled Double Blind Multicenter Study of the Effectiveness of 5-Aminosalicylic Acid in Patients with Crohnʼs Disease in Remission

Abstract
We evaluated the efficacy of an oral formulation of 5-amino-salicylic acid in lowering the relapse rate after remission of Crohn's disease. Included were 59 patients who had proven Crohn's disease of at least 1 year's duration, and who had been in continuous remission for at least 6 months, while taking only 5-aminosalicylic acid or no therapy at all. Remission was defined as a Harvey Bradshaw index score (Softley-Clamp modification) of

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