• F M Habal and G R Greenberg.
• Division of Gastroenterology, Toronto General Hospital, Ontario, Canada.
• Am. J. Gastroenterol. 1988 Jan 1; 83 (1): 15-9.

AbstractSulfasalazine is an effective drug for maintaining remission in ulcerative colitis, but its use may be precluded by side effects. Eighty-five patients with active ulcerative colitis participated in a prospective open trial to examine the tolerance of the active constituent 5-aminosalicylic acid (5-ASA), coated with an acrylic resin, and its efficacy in inducing and subsequently maintaining a remission. Fifty-one of the patients had previously developed adverse reactions to sulfasalazine. After 4 wk of treatment with 3.2 g 5-ASA daily, a remission was achieved in 23 of 36 patients (64%) with mild or moderate disease, but in none of 43 patients with severe disease. Six patients were withdrawn because of side effects to 5-ASA, but only two of these patients had similar reactions on sulfasalazine. Supplementary corticosteroids for 6 wk or less induced a remission in 27 of the patients who had failed on 5-ASA alone. Fifty patients were therefore eligible for the maintenance phase of the trial, and 39 (78%) had a sustained clinical and endoscopic remission upon 1-yr follow-up. 5-ASA appears to be an effective drug for inducing remission in mild or moderate ulcerative colitis and for the maintenance of remission. It thus represents a valuable addition to the management of patients intolerant to sulfasalazine.

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