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Gabapentin and Tizanidine for Insomnia in Chronic Pain

Chronic Pain Clinical Trial

Official title:
Effect of Gabapentin and Tizanidine on Insomnia in Chronic Pain Patients: A Randomized, Double-blind, Placebo-controlled Crossover Trial.

Clinical Trial Summary

This is a double-blind, placebo-controlled, randomized, crossover trial aimed at assessing the effect of gabapentin and tizanidine, two pain medications, on insomnia in chronic pain patients.

Clinical Trial Description

Chronic pain and insomnia are highly prevalent conditions affecting 10-25% and 6-10% of the general population, respectively. Importantly, these two conditions frequently co-occur, with 50-80% of chronic pain patients reporting sleep disturbances. Identifying medication that alleviates pain and insomnia simultaneously may help reduce risks associated with polypharmacy, including drug-drug interactions. In this double-blind, placebo-controlled, randomized, crossover trial, gabapentin and tizanidine, two drugs which are respectively commonly used to treat neuropathic and musculoskeletal pain, will be compared to each other and to placebo in their ability to alleviate insomnia in chronic pain patients. In each week, patients will receive 3-night (Friday-Sunday) trials each of placebo, gabapentin or tizanidine in a randomized, double-blind order and will monitor their insomnia using the Athens Insomnia Scale (AIS) questionnaire (adapted to fit the time frame of this trial). The primary outcome consists of the difference in mean AIS scores between the 3 treatments at the primary time point, which is Monday of each week (after 3 nights of drug intake). Patients will also monitor their sleepiness, pain relief and overall improvement as secondary variants using the Stanford Sleepiness Scale (SSS), Visual Analog Scale (VAS), and Patient's Global Impression of Change (PGIC) questionnaires respectively. Scores on the Monday preceding the first treatment will serve as baseline and the period between treatments (i.e. Monday-Thursday nights) will serve as a 4-day washout period between treatments. Our hypothesis is that gabapentin and tizanidine will both be more effective than placebo in alleviating insomnia in chronic pain patients but will not be different from one another. ;

Study Design

Related Conditions & MeSH terms

  • Chronic Pain
  • Insomnia Due to Medical Condition
  • Sleep Initiation and Maintenance Disorders
Clinical Trial Details
NCT number NCT04429347
Study type Interventional
Source University of California, San Diego
Contact
Status Enrolling by invitation
Phase Phase 2
Start date July 29, 2020
Completion date July 29, 2025
View Details
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