Document Detail

Mesalazine: a global safety evaluation.
MedLine Citation:
PMID:  1972297     Owner:  NLM     Status:  MEDLINE    
The potential benefit of sulphasalazine in inflammatory bowel disease is limited by the wide variety of side effects that occur in about one-third of treated patients. Most of the side effects of sulphasalazine are due to the sulphapyridine moiety. Claversal has the advantage of delivering the active ingredient of sulphasalazine--mesalazine--without the undesirable effects of sulphapyridine. Four international multicentre trials involving 932 patients with ulcerative colitis or Crohn's disease compared 0.75 g/day or 1.5 g/day mesalazine, 1.5 g/day or 3.0 g/day sulphasalazine, or placebo. Forty-seven (14%) of 331 patients receiving mesalazine reported adverse events, whereas 33 (23%) of 144 patients receiving sulphasalazine and 23 (19%) of 123 patients receiving placebo reported adverse effects. When lower doses of both mesalazine (0.75 g/day) and sulphasalazine (1.5 to 2.0 g/day) were evaluated in a maintenance trial, the percentage of adverse events was similar for both drugs--14% and 12%, respectively. In these trials the incidence of adverse effects was similar with both doses of mesalazine; however, doubling the sulphasalazine dose resulted in a twofold increase in adverse effects. In contrast, mesalazine appeared not to induce dose-related effects, suggesting that patients may be able to tolerate even higher mesalazine doses than those studied. The withdrawal rate owing to adverse events in all four controlled trials was similar for patients treated with mesalazine (6%) and sulphasalazine (8%). Results of an open postmarketing sampling trial of just over 1700 patients in Germany showed a low overall incidence of adverse effects (3%) with mesalazine and none of the rare, more serious effects, such as hepatoxicity, agranulocytosis, or pulmonary complications.(ABSTRACT TRUNCATED AT 250 WORDS)
R Brimblecombe
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Scandinavian journal of gastroenterology. Supplement     Volume:  172     ISSN:  0085-5928     ISO Abbreviation:  Scand. J. Gastroenterol. Suppl.     Publication Date:  1990  
Date Detail:
Created Date:  1990-07-13     Completed Date:  1990-07-13     Revised Date:  2008-02-13    
Medline Journal Info:
Nlm Unique ID:  0437034     Medline TA:  Scand J Gastroenterol Suppl     Country:  NORWAY    
Other Details:
Languages:  eng     Pagination:  66     Citation Subset:  IM    
Smith Kline & French Research Ltd., Welwyn, Hertfordshire, England.
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MeSH Terms
Aminosalicylic Acids / adverse effects*
Crohn Disease / drug therapy
Dose-Response Relationship, Drug
Sulfasalazine / adverse effects
Reg. No./Substance:
0/Aminosalicylic Acids; 599-79-1/Sulfasalazine; 89-57-6/Mesalamine

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