A Study to Investigate the Tolerability and Effects on Epidermal Nerve Fiber Density of Multiple Low-Concentrations of NGX-1998 in Healthy Volunteers

ClinicalTrials.gov ID: NCT00912262

Open the official record

This page only displays public information reproduced from the official ClinicalTrials.gov record NCT00912262. It adds no medical advice, opinions, or eligibility judgments. The official record remains the source of truth for eligibility criteria, enrollment, and contact information.

View official ClinicalTrials.gov record → Back to search

ClinicalTrials.gov public records Last synced Nov 15, 2026, 3:47 PM EST

All trial information on this site comes from the official ClinicalTrials.gov public API (clinicaltrials.gov/api/v2), run by the U.S. National Library of Medicine. We only display that public information; we do not add opinions, endorsements, or any other intent. Always review the official ClinicalTrials.gov record for the latest information.

Official title

A Randomized, Single Blind Study to Investigate the Tolerability and Effects on Epidermal Nerve Fiber Density of Multiple Low-Concentrations of Capsaicin Topical Liquid NGX-1998 in Healthy Volunteers

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

The purpose of this single-blinded study in healthy volunteers is to select a Low-Concentration Capsaicin Topical Liquid (LC-CTL) to serve as a control formulation in the further clinical development of Capsaicin Topical Liquid, NGX-1998 (10% w/w). The goal is to identify a low concentration formulation that will not reduce ENFD in healthy normal volunteers when compared to NGX-1998 (10% w/w) but would still produce some local capsaicin-related application site responses (e.g. erythema, heat sensation or pain) when applied.

Study identification

NCT ID: NCT00912262
Recruitment status: Completed
Study type: Interventional
Phase: Phase 1
Lead sponsor: NeurogesX; Industry
Enrollment: 36 participants

Conditions and interventions

Conditions

Pain

Interventions

Capsaicin Topical Liquid Drug

Drug

Eligibility (public fields only)

Age range: 18 Years to 40 Years
Sex: All
Healthy volunteers: Accepts healthy volunteers

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date: Jun 2008 (Type not available)
Primary completion: Not listed
Completion: Nov 2008 (Type not available)
Last update posted: Jun 3, 2009

2008

United States locations

U.S. sites: 1
U.S. states: 1
U.S. cities: 1

Facility	City	State	ZIP	Site status
Lifetree Clinical Research	Salt Lake City	Utah	84106	—

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 NCT00912262, 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 Jun 3, 2009 · Synced Nov 15, 2026