# Randomized, Double Blind, Multicenter Study of the Safety and Efficacy of Valdecoxib 40 mg Once Daily Compared With Diclofenac 75 mg Twice Daily in Acute Low Back Pain

> **NCT00649610** · PHASE4 · COMPLETED · sponsor: **Pfizer** · enrollment: 340 (actual)

## Conditions studied

- Low Back Pain

## Interventions

- **DRUG:** valdecoxib
- **DRUG:** diclofenac

## Key facts

- **NCT ID:** NCT00649610
- **Lead sponsor:** Pfizer
- **Sponsor class:** INDUSTRY
- **Phase:** PHASE4
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2002-11
- **Primary completion:** —
- **Final completion:** 2003-05
- **Target enrollment:** 340 (ACTUAL)
- **Last updated:** 2008-04-10


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT00649610

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT00649610, "Randomized, Double Blind, Multicenter Study of the Safety and Efficacy of Valdecoxib 40 mg Once Daily Compared With Diclofenac 75 mg Twice Daily in Acute Low Back Pain". Retrieved via AI Analytics 2026-06-25 from https://api.ai-analytics.org/clinical/NCT00649610. Licensed CC0.

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