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Am J Gastroenterol. 2004 May;99(5):914-20.

Paroxetine to treat irritable bowel syndrome not responding to high-fiber diet: a double-blind, placebo-controlled trial.

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  • 1University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA.

Abstract

OBJECTIVES:

The purpose of the trial was to determine whether a high-fiber diet (HFD) alone or in combination with paroxetine or placebo was effective treatment for patients with irritable bowel syndrome (IBS).

METHODS:

DESIGN:

Trial of HFD alone (Group 1) followed by a randomized, double-blind trial of HFD with paroxetine or placebo (Group 2).

SETTING:

Gastroenterology office in a 524-bed university-affiliated community hospital in Pittsburgh.

PATIENTS:

Men and women, aged 18-65 yr, previously diagnosed with IBS but otherwise healthy.

INTERVENTION:

Institution of HFD in 98 participants consuming low- or average-fiber diets. Allocation of paroxetine to 38 and placebo to 43 symptomatic participants consuming HFDs.

MEASUREMENTS:

Overall well-being, abdominal pain, and abdominal bloating (Groups 1 and 2); food avoidance, work functioning, and social functioning (Group 2).

RESULTS:

In Group 1, overall well-being improved in 26% patients, and abdominal pain and bloating decreased in 22% and 26% patients, respectively, with an HFD. In Group 2, overall well-being improved more with paroxetine than with placebo (63.3%vs 26.3%; p= 0.01), but abdominal pain, bloating, and social functioning did not. With paroxetine, food avoidance decreased (p= 0.03) and work functioning was marginally better (p= 0.08). Before unblinding, more paroxetine recipients than placebo recipients wanted to continue their study medication (84%vs 37%; p < 0.001).

CONCLUSIONS:

The difference in overall well-being found in our paroxetine/placebo trial is greater than that found in previously published drug/placebo trials for IBS. Moreover, the difference in well-being applied to nondepressed recipients of paroxetine.

PMID:
15128360
[PubMed - indexed for MEDLINE]
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