# A Study of Pain Relief in Low Back Pain

> **NCT00325949** · PHASE3 · COMPLETED · sponsor: **Abbott** · enrollment: 770 (actual)

## Conditions studied

- Chronic Low Back Pain

## Interventions

- **DRUG:** Extended release hydrocodone and acetaminophen (Vicodin CR)
- **DRUG:** hydrocodone/acetaminophen extended release (Vicodin CR)
- **DRUG:** placebo

## Key facts

- **NCT ID:** NCT00325949
- **Lead sponsor:** Abbott
- **Sponsor class:** INDUSTRY
- **Phase:** PHASE3
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2006-05
- **Primary completion:** 2007-05
- **Final completion:** 2007-06
- **Target enrollment:** 770 (ACTUAL)
- **Last updated:** 2011-07-25


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT00325949

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT00325949, "A Study of Pain Relief in Low Back Pain". Retrieved via AI Analytics 2026-05-27 from https://api.ai-analytics.org/clinical/NCT00325949. Licensed CC0.

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