Brief Summary

The purpose of the study is to assess the efficacy, safety and tolerability of NGX 4010 applied for 60 minutes for the treatment of PHN.

Trial Health

On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment

150

participants targeted

Target at P25-P50 for phase_3

Geographic Reach

1 country

19 active sites

Status

completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

September 5, 2003

Completed

4 days until next milestone

First Posted

Study publicly available on registry

September 9, 2003

Completed

Last Updated

March 6, 2008

Status Verified

September 1, 2007

First QC Date

September 5, 2003

Last Update Submit

March 4, 2008

Conditions

Herpes Zoster Neuralgia Pain Peripheral Nervous System Diseases

Keywords

Dermal assessmentPain measurementDiaryAnalgesics/*therapeutic useCapsaicin/*administration & dosage/adverse effectsHerpes zoster/*complication/drug therapyNeuralgia/*drug therapy/etiologyPainPeripheral nervous system diseases/*complications

Interventions

Capsaicin Dermal PatchDRUG

Eligibility Criteria

Age18 Years+

Sexall

Healthy VolunteersNo

Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

At least 18 years of age.
Be in good health.
Diagnosis of postherpetic neuralgia (PHN) made by the primary treating physician or Investigator, and at least 3 months post-vesicle crusting.
Screening Pain Sum Score of 12 to 36.
Intact, unbroken skin over the painful area(s) to be treated.
If taking chronic pain medications, be on a stable (not PRN) regimen for at least 21 days prior to Treatment Visit (Day 0) and willing to maintain medications at same stable dose(s) and schedule throughout the study.
Female subjects with child-bearing potential must have a negative serum beta hCG pregnancy test, to be performed at the Screening Visit.
All subjects must be willing to use effective methods of birth control and/or refrain from participating in a conception process during the study and for 30 days following experimental drug exposure.
Be willing and able to comply with protocol requirements for the duration of study participation. (Such requirements include, but are not limited to: completing a daily pain diary, attending all study visits, and refraining from elective surgery and extensive travel during study participation.)

You may not qualify if:

Concomitant opioid medication, unless orally or transdermally administered and not exceeding a total daily dose of morphine 60 mg/day, or equivalent. Parenteral opioid use is excluded, regardless of dose.
Unavailability of an effective rescue medication strategy for the subject, such as unwillingness to use opioid analgesics during treatment, or high tolerance to opioids precluding the ability to relieve treatment-associated discomfort with Roxicodone®, as judged by the Investigator.
Active substance abuse or history of chronic substance abuse within the past year, or prior chronic substance abuse judged likely to recur during the study period by the investigator.
Recent use (within 21 days preceding the Treatment Visit \[Day 0\]) of any topically applied pain medication, such as non-steroidal anti-inflammatory drugs, menthol, methyl salicylate, local anesthetics (including Lidoderm®), steroids or capsaicin products on the painful areas.
Current use of any investigational agent, or Class 1 anti-arrhythmic drugs (such as tocainide and mexiletine).
Significant pain of an etiology other than PHN, for example, compression-related neuropathies (e.g., spinal stenosis) or fibromyalgia or arthritis. Subjects must not have significant ongoing pain from other cause(s) that may interfere with judging PHN-related pain.
Painful PHN areas located only on the face, above the hairline of the scalp, and/or in proximity to mucous membranes. (Investigational treatment with NGX-4010 is not allowed in these areas.)
Any implanted medical device (spinal cord stimulator, intrathecal pump or peripheral nerve stimulator) for the treatment of neuropathic pain.
Hypersensitivity to capsaicin (i.e., chili peppers or Over-the-Counter (OTC) capsaicin products), local anesthetics, Roxicodone® or adhesives.
Significant ongoing or untreated abnormalities in cardiac, renal, hepatic, or pulmonary function that may interfere either with the ability to complete the study or the evaluation of adverse events.

Contact the study team to confirm eligibility.