An Open Label, Dose Finding Trial of Viagra for the Treatment of Neuropathic Pain (in Diabetes Mellitus)
NCT00194909
ABOUT THIS STUDY
FOR MORE INFORMATION
Contact a representative by phone, email, or visiting the study website. Please see the references below:
Pfizer Clinical Trials Contact Center
1-800-718-1021
- Patients with signs and symptoms of a diabetic peripheral neuropathy as diagnosed by a neurologist with neuropathic pain will be included. The pain will have been present for at least 6 months. Patients may be on other medications for neuropathic pain such as anti-epileptic medications or tricyclic anti-depressants, however must be on a stable dose for 4 weeks prior to and during the study. Eligible patients must have a score of at least 40 on the VAS.
- Previous adverse reaction to viagra
- Blood pressure < 90/50 or > 170/100
- unstable angina
- retinitis pigmentosa,
- myocardial infarction stroke or life-threatening arrhythmia within the last 6 months
- hemoglobulin A1c > 11
- HIV infection
- history of priapism
- hepatic or renal failure
- pregnancy
- current or past use of nitrates
NEED INFO?
Questions about a trial? Call or email to reach a Pfizer Clinical Trial Contact Center Representative

TRY A NEW SEARCH
Search for Clinical Trials by condition, keyword or trial number. Share your location or enter your city or zip code to find studies near you.
Based on your search, you may also be interested in
- New York, New York
Descriptive Information | ||||
---|---|---|---|---|
Brief Title ICMJE | An Open Label, Dose Finding Trial of Viagra for the Treatment of Neuropathic Pain (in Diabetes Mellitus) | |||
Official Title ICMJE | An Open Label, Dose Finding Trial of Viagra for the Treatment of Neuropathic Pain (in Diabetes Mellitus) | |||
Brief Summary | The purpose of this study is to study if sildenafil (Viagra) is effective in improving neuropathic pain. This will be an open label study at 3 doses of sildenafil (25 mg, 50 mg and 100 mg). If this study suggests efficacy, the information will be used to plan a placebo controlled, double-blind study in the future. | |||
Detailed Description | Neuropathic pain is a common problem resulting from a diverse group of disorders including nerve injuries and neuropathies related to diabetes and other disorders. Pharmacologic agents are available such as gabapentin, which can successfully treat many patients. For many however there is inadequate treatment available, due to lack of efficacy and poor tolerability and the need for new pharmacologic agents is recognized. We propose to study if sildenafil is effective in improving neuropathic pain, in patients with diabetes mellitus. Our primary outcome will be a reduction in the weekly average 11 point Likert pain scale (0 - no pain, 10 - worst possible pain) at 8 weeks. Secondary outcomes will include the Rand-36 quality of life scale, McGill visual analogue scale (VAS) and a sleep interference scale. This will be an open label study at 3 doses of sildenafil (25 mg, 50 mg and 100 mg). Patients will begin at 25 mg at night for 1 week. If pain continues, the dose will be increased to 50 mg at night for 1 week. If pain continues the dose will be increased to 100 mg at night. Subjects will be on the medication for 8 weeks. If this study suggests efficacy, the information will be used to plan a placebo controlled, double-blind study in the future. We propose to study if sildenafil is effective in improving neuropathic pain. Our primary outcome will be a reduction in the weekly average 11 point Likert pain scale (0 - no pain, 10 - worst possible pain) at 8 weeks. Secondary outcomes will include the Rand-36 quality of life scale, McGill visual analogue scale (VAS) and a sleep interference scale. This will be an open label study at 3 doses of sildenafil (25 mg, 50 mg and 100 mg). Patients will begin at 25 mg at night for 1 week. If pain continues, the dose will be increased to 50 mg at night for 1 week. If pain continues the dose will be increased to 100 mg at night. Subjects will be on the medication for 8 weeks. If this study suggests efficacy, the information will be used to plan a placebo controlled, double-blind study in the future. | |||
Study Type ICMJE | Interventional | |||
Study Phase ICMJE | Phase 4 | |||
Study Design ICMJE | Allocation: Non-Randomized Intervention Model: Single Group Assignment Masking: None (Open Label) Primary Purpose: Treatment | |||
Condition ICMJE | Diabetic Neuropathy | |||
Intervention ICMJE | Drug: sildenafil (Viagra) | |||
Study Arms ICMJE | Not Provided | |||
Publications * | Not Provided | |||
* Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline. | ||||
Recruitment Information | ||||
Recruitment Status ICMJE | Completed | |||
Actual Enrollment ICMJE | 8 | |||
Original Enrollment ICMJE | 10 | |||
Actual Study Completion Date ICMJE | July 2006 | |||
Actual Primary Completion Date | July 2006 (Final data collection date for primary outcome measure) | |||
Eligibility Criteria ICMJE | Inclusion Criteria:
Exclusion Criteria:
| |||
Sex/Gender ICMJE |
| |||
Ages ICMJE | 18 Years and older (Adult, Older Adult) | |||
Accepts Healthy Volunteers ICMJE | No | |||
Contacts ICMJE | Contact information is only displayed when the study is recruiting subjects | |||
Listed Location Countries ICMJE | United States | |||
Removed Location Countries | ||||
Administrative Information | ||||
NCT Number ICMJE | NCT00194909 | |||
Other Study ID Numbers ICMJE | 1103-032 | |||
Has Data Monitoring Committee | No | |||
U.S. FDA-regulated Product | Not Provided | |||
IPD Sharing Statement ICMJE | Not Provided | |||
Responsible Party | Thomas Brannagan, MD Associate Professor of Clinical Neurology, Weill Cornell Medical College | |||
Study Sponsor ICMJE | Weill Medical College of Cornell University | |||
Collaborators ICMJE | Pfizer | |||
Investigators ICMJE |
| |||
PRS Account | Weill Medical College of Cornell University | |||
Verification Date | March 2008 | |||
ICMJE Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP |