# Efficacy of Matrifen in Patients Older Than 18 Years With Severe, Chronic Pain

> **NCT00556270** · — · COMPLETED · sponsor: **Nycomed** · enrollment: 3000 (estimated)

## Conditions studied

- Severe, Chronic Pain

## Interventions

- **DRUG:** Matrifen

## Key facts

- **NCT ID:** NCT00556270
- **Lead sponsor:** Nycomed
- **Sponsor class:** INDUSTRY
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** COMPLETED
- **Start date:** 2007-11
- **Primary completion:** —
- **Final completion:** 2008-05
- **Target enrollment:** 3000 (ESTIMATED)
- **Last updated:** 2012-05-07


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT00556270

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT00556270, "Efficacy of Matrifen in Patients Older Than 18 Years With Severe, Chronic Pain". Retrieved via AI Analytics 2026-06-30 from https://api.ai-analytics.org/clinical/NCT00556270. Licensed CC0.

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