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Clinical Trial Summary

Naltrexone has a dual function as an opioid receptor antagonist and a Toll-Like Receptor-4 (TLR4) antagonist. While primarily approved in a 50 mg tablet for treating opioid and alcohol addiction by blocking opioid receptors, naltrexone's TLR4-blocking effect is also significant. This action reduces the levels of pro-inflammatory cytokines responsible for pain generation, primarily in the trigeminal ganglion and dorsal root ganglia. These sites play a key role in the effectiveness of naltrexone as a pain-alleviating agent. Acetaminophen is the active ingredient in Tylenol, an over-the-counter non-opioid analgesic and antipyretic agent. Both naltrexone and acetaminophen have demonstrated effectiveness in the treatment of acute migraine, physical pain, and emotional pain. However, while naltrexone has demonstrated potential in animal and human studies, confirmatory clinical trials for pain treatment in humans are still lacking. Additionally, it is important to note that around 50% of migraine patients experience co-occurring anxiety. Therefore, this study aims to assess the effectiveness of naltrexone-acetaminophen in treating migraine and co-occurring anxiety compared to each drug alone and placebo. The sponsor has conducted four clinical studies showing promising results of naltrexone-acetaminophen in treating migraine, chronic low-back pain, and emotional pain.


Clinical Trial Description

This study evaluating naltrexone-acetaminophen in acute migraine and co-occurring anxiety in adults lasts between 1.2 to 3.5 months (depending on when a migraine attack is treated during the treatment period). The study includes the following key events: - Screening Visit (Day 1). - 30-day Run-In Period (Days 1-30). - Randomization Visit (Days 31-37). - Treatment Period (Days 31-97): up to 60 days to treat a migraine at home. - End-of-Study Visit (Days 36 -106): 3 to 7 days after treatment. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT05685225
Study type Interventional
Source Allodynic Therapeutics, Inc
Contact Annette C Toledano, MD
Phone 3058956808
Email ctg@allodynic.com
Status Not yet recruiting
Phase Phase 2
Start date July 1, 2024
Completion date July 1, 2026

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