# A Study of the Effectiveness and Safety of Tramadol HCl/Acetaminophen Compared to Placebo in Treating Acute Low Back Pain

> **NCT00210561** · PHASE4 · TERMINATED · sponsor: **Johnson & Johnson Pharmaceutical Research & Development, L.L.C.** · enrollment: 22 (actual)

## Conditions studied

- Back Pain
- Low Back Pain

## Interventions

- **DRUG:** tramadol hydrochloride , acetaminophen

## Key facts

- **NCT ID:** NCT00210561
- **Lead sponsor:** Johnson & Johnson Pharmaceutical Research & Development, L.L.C.
- **Sponsor class:** INDUSTRY
- **Phase:** PHASE4
- **Study type:** INTERVENTIONAL
- **Status:** TERMINATED
- **Start date:** 2005-03
- **Primary completion:** —
- **Final completion:** 2005-04
- **Target enrollment:** 22 (ACTUAL)
- **Why stopped:** Study was stopped shortly after initiation due to change in strategic direction of the company; no safety concerns were observed that impacted this decision.
- **Last updated:** 2011-06-10

## Collaborators

- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT00210561

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT00210561, "A Study of the Effectiveness and Safety of Tramadol HCl/Acetaminophen Compared to Placebo in Treating Acute Low Back Pain". Retrieved via AI Analytics 2026-06-02 from https://api.ai-analytics.org/clinical/NCT00210561. Licensed CC0.

---

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