Actively Recruiting

Phase 2
Age: 18Years +
All Genders
NCT04678895

Low-Dose Naltrexone for the Treatment of Painful Diabetic Neuropathy

Led by Dartmouth-Hitchcock Medical Center · Updated on 2026-05-06

35

Participants Needed

1

Research Sites

310 weeks

Total Duration

On this page

AI-Summary

What this Trial Is About

Diabetes affects more than 30 million people in the United States and is a leading cause of morbidity. Over 25% diabetics also suffer from debilitating painful diabetic neuropathy in the lower legs and feet. This pain can be severe, difficult to control, and have a significant negative impact on quality of life. Opioid medications have historically been a mainstay of treatment for this pain, despite the risks. As the death toll from the U.S. opioid epidemic continues to rise, the need for quality alternative non-opioid medications to treat pain becomes more urgent. One of these potential medications is Low-Dose Naltrexone (LDN). This drug is reported to work by enhancing the body's natural pain relieving mechanisms and decreases inflammation by targeting specific cells called microglia which have been shown to influence chronic pain. LDN has been shown to be a safe medication with minimal side effects. Its efficacy has been demonstrated in other painful conditions but has never been fully studied for treating painful diabetic neuropathy. The goal of this randomized, placebo-controlled trial is to determine if LDN is effective for treating the pain caused by diabetic neuropathy. LDN's mechanism of action is well suited to treating painful diabetic neuropathy, and LDN shows significant promise as a safe, non-opioid alternative that can decrease pain and improve quality of life for those suffering from this painful condition.

CONDITIONS

Official Title

Low-Dose Naltrexone for the Treatment of Painful Diabetic Neuropathy

Who Can Participate

Age: 18Years +
All Genders

Eligibility Criteria

Eligible

You may qualify if you...

  • Diagnosis of Painful Diabetic Neuropathy (PDN) for more than 6 months
  • Failed at least one prior standard treatment for PDN (e.g., gabapentin, duloxetine)
  • No other known causes of lower extremity neuropathic pain
  • Able to give informed consent
  • Age over 18 years
  • Stable on all current non-opioid pain medications for at least 1 month
  • English is primary language
Not Eligible

You will not qualify if you...

  • Known allergy to naltrexone or naloxone
  • Presence of known causes of lower extremity neuropathic pain not due to PDN
  • Active substance use disorder or alcohol use disorder as defined by DSM-V
  • Currently receiving treatment for substance use or alcohol use disorder
  • Current opioid therapy or opioid use within the past 1 month

AI-Screening

AI-Powered Screening

Complete this quick 3-step screening to check your eligibility

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Trial Site Locations

Total: 1 location

1

Dartmouth-Hitchcock Medical Center

Lebanon, New Hampshire, United States, 03766

Actively Recruiting

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Research Team

B

Bruce Vrooman

CONTACT

How is the study designed?

Study Type

INTERVENTIONAL

Masking

DOUBLE

Allocation

RANDOMIZED

Model

CROSSOVER

Primary Purpose

TREATMENT

Number of Arms

2

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