# Study to Test the Effectiveness of Controlled-Release OROS® Hydromorphone HCl Compared to Placebo in Patients With Chronic Low Back Pain

> **NCT00549042** · PHASE3 · COMPLETED · sponsor: **Mallinckrodt** · enrollment: 459 (actual)

## Conditions studied

- Chronic Low Back Pain

## Interventions

- **DRUG:** OROS hydromorphone
- **DRUG:** Placebo

## Key facts

- **NCT ID:** NCT00549042
- **Lead sponsor:** Mallinckrodt
- **Sponsor class:** INDUSTRY
- **Phase:** PHASE3
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2007-10
- **Primary completion:** 2009-01
- **Final completion:** 2009-01
- **Target enrollment:** 459 (ACTUAL)
- **Last updated:** 2020-06-17


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT00549042

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT00549042, "Study to Test the Effectiveness of Controlled-Release OROS® Hydromorphone HCl Compared to Placebo in Patients With Chronic Low Back Pain". Retrieved via AI Analytics 2026-06-24 from https://api.ai-analytics.org/clinical/NCT00549042. Licensed CC0.

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*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*