Study of NGX-1998 for the Treatment of Postherpetic Neuralgia
Public ClinicalTrials.gov record NCT01228838. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
A Multicenter Randomized, Double-Blind, Controlled Study to Evaluate Safety, Tolerability and Preliminary Efficacy of Two Capsaicin Concentration Variations of NGX-1998 (10% or 20% w/w) in Subjects With Postherpetic Neuralgia (PHN)
Study identification
- NCT ID
- NCT01228838
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Phase 2
- Lead sponsor
- NeurogesX
- Industry
- Enrollment
- 183 participants
Conditions and interventions
Conditions
Interventions
- NGX-1998 Drug
- Placebo Liquid Drug
Drug
Eligibility (public fields only)
- Age range
- 18 Years to 90 Years
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Sep 30, 2010
- Primary completion
- Aug 31, 2011
- Completion
- Aug 31, 2011
- Last update posted
- Sep 9, 2012
2010 – 2011
United States locations
- U.S. sites
- 35
- U.S. states
- 24
- U.S. cities
- 35
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| NeurogesX Investigational Site | Huntsville | Alabama | — | — |
| NeurogesX Investigational Site | Tucson | Arizona | — | — |
| NeurogesX Investigational Site | Irvine | California | — | — |
| NeurogesX Investigational Site | La Jolla | California | — | — |
| NeurogesX Investigational Site | Napa | California | — | — |
| NeurogesX Investigational Site | San Francisco | California | — | — |
| NeurogesX Investigational Site | Santa Monica | California | — | — |
| NeurogesX Investigational Site | New Port Richey | Florida | — | — |
| NeurogesX Investigational Site | North Palm Beach | Florida | — | — |
| NeurogesX Investigational Site | Sarasota | Florida | — | — |
| NeurogesX Investigational Site | St. Petersburg | Florida | — | — |
| NeurogesX Investigational Site | Marietta | Georgia | — | — |
| NeurogesX Investigational Site | Boise | Idaho | — | — |
| NeurogesX Investigational Site | Bloomington | Illinois | — | — |
| NeurogesX Investigational Site | West Des Moines | Iowa | — | — |
| NeurogesX Investigational Site | Kansas City | Kansas | — | — |
| NeurogesX Investigational Site | Lexington | Kentucky | — | — |
| NeurogesX Investigational Site | Shreveport | Louisiana | — | — |
| NeurogesX Investigational Site | Hyannis | Massachusetts | — | — |
| NeurogesX Investigational Site | Ann Arbor | Michigan | — | — |
| NeurogesX Investigational Site | Minneapolis | Minnesota | — | — |
| NeurogesX Investigational Site | Hattiesburg | Mississippi | — | — |
| NeurogesX Investigational Site | Albany | New York | — | — |
| NeurogesX Investigational Site | Rochester | New York | — | — |
| NeurogesX Investigational Site | Hickory | North Carolina | — | — |
| NeurogesX Investigational Site | Winston-Salem | North Carolina | — | — |
| NeurogesX Investigational Site | Portland | Oregon | — | — |
| NeurogesX Investigational Site | Altoona | Pennsylvania | — | — |
| NeurogesX Investigational Site | San Antonio | Texas | — | — |
| NeurogesX Investigational Site | Webster | Texas | — | — |
| NeurogesX Investigational Site | Salt Lake City | Utah | — | — |
| NeurogesX Investigational Site | Richmond | Virginia | — | — |
| NeurogesX Investigational Site | Seattle | Washington | — | — |
| NeurogesX Investigational Site | Wenatchee | Washington | — | — |
| NeurogesX Investigational Site | Madison | Wisconsin | — | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT01228838, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Sep 9, 2012 · Synced Jul 21, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT01228838 live on ClinicalTrials.gov.