# An Efficacy and Safety Study of Acetaminophen Plus Tramadol Hydrochloride (JNS013) in Participants With Chronic Pain

> **NCT00736853** · PHASE3 · COMPLETED · sponsor: **Janssen Pharmaceutical K.K.** · enrollment: 321 (actual)

## Conditions studied

- Pain

## Interventions

- **DRUG:** Tramadol Hydrochloride Plus Acetaminophen (Open-Label)
- **DRUG:** Tramadol Hydrochloride Plus Acetaminophen (Double-Blind)
- **DRUG:** Placebo (Double-Blind)

## Key facts

- **NCT ID:** NCT00736853
- **Lead sponsor:** Janssen Pharmaceutical K.K.
- **Sponsor class:** INDUSTRY
- **Phase:** PHASE3
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2008-06
- **Primary completion:** 2009-01
- **Final completion:** 2009-01
- **Target enrollment:** 321 (ACTUAL)
- **Last updated:** 2013-09-26


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT00736853

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT00736853, "An Efficacy and Safety Study of Acetaminophen Plus Tramadol Hydrochloride (JNS013) in Participants With Chronic Pain". Retrieved via AI Analytics 2026-05-28 from https://api.ai-analytics.org/clinical/NCT00736853. Licensed CC0.

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