# The Effect of Chlorzoxazone on Moderate to Severe Postoperative Pain After Spine Surgery

> **NCT01933542** · PHASE4 · COMPLETED · sponsor: **Rigshospitalet, Denmark** · enrollment: 110 (actual)

## Conditions studied

- Chlorzoxazone
- Postoperative Pain

## Interventions

- **DRUG:** Placebo
- **DRUG:** Chlorzoxazone
- **DRUG:** Morphine
- **DRUG:** Zofran

## Key facts

- **NCT ID:** NCT01933542
- **Lead sponsor:** Rigshospitalet, Denmark
- **Sponsor class:** OTHER
- **Phase:** PHASE4
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2013-08
- **Primary completion:** 2015-08
- **Final completion:** 2015-08
- **Target enrollment:** 110 (ACTUAL)
- **Last updated:** 2015-09-17

## Collaborators

- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT01933542

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT01933542, "The Effect of Chlorzoxazone on Moderate to Severe Postoperative Pain After Spine Surgery". Retrieved via AI Analytics 2026-06-08 from https://api.ai-analytics.org/clinical/NCT01933542. Licensed CC0.

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