The effects of withdrawing tegaserod treatment in comparison with continuous treatment in irritable bowel syndrome patients with abdominal pain/discomfort, bloating and constipation: a clinical study

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Abstract

Background

The post-withdrawal characteristics of tegaserod treatment in patients with irritable bowel syndrome with constipation remain undefined.

Aim

To evaluate the effects of continuous tegaserod treatment, versus intermittent or withdrawal of treatment in patients with irritable bowel syndrome with constipation.

Methods

In a randomized, open-label trial, all patients initially received tegaserod 6 mg b.d. Responders were randomized to continue or withdraw from treatment for 8 weeks and symptom recurrence was assessed. Tegaserod was re-introduced in withdrawal patients who experienced symptom recurrence, allowing an assessment of intermittent treatment. Two separate analyses assessed the effects of intermittent and withdrawal of treatment on symptom recurrence.

Results

Five hundred irritable bowel syndrome with constipation patients initially received tegaserod; 410 completed treatment. Time to symptom recurrence was shorter in withdrawal patients than those maintained on tegaserod. Significantly more patients maintained on tegaserod had not experienced symptom recurrence by week 8, compared with intermittent (86.5% vs. 58.1%, respectively) or withdrawal of treatment (69.2% vs. 11.3%, respectively) (P < 0.0001 for both). Significant treatment effects were observed for bloating (P < 0.01) and abdominal pain/discomfort (P < 0.02). Most adverse events were mild to moderate.

Conclusions

Irritable bowel syndrome with constipation patients who receive continuous or intermittent tegaserod are less likely to experience symptom recurrence than patients withdrawn from treatment.

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