Safety and Efficacy of Tegaserod in Opioid-induced Constipation in Patients With Non-cancer Pain.

This study will evaluate the safety and efficacy of Tegaserod in opioid-induced constipation (OIC) in patients with non-cancer pain. Patients who enter this study PRIOR to the core study (CHTF919N2201) interim analysis (IA) receive the treatment as follows: Patients on tegaserod 6 mg twice daily (b.i.d.) or 12 mg once daily (o.d.) in the core study will remain on the same dose in the extension (double-blind). Patients on placebo during the core study will receive tegaserod 12 mg o.d. (open-label) Patients who enter this study AFTER the core study interim analysis will receive the selected tegaserod dose regimen (open-label) determined by the core study IA.