Testing a new medication for low back and leg pain relief.
Official title: Efficacy of Modified Release Metaxalone 640 mg in Acute Lumbosacral Musculoskeletal Conditions With Spinal Stenosis and Sciatica
Run by Primus Pharmaceuticals · NCT06157177 · Data updated 2026-11-12
This study is testing a new medication to see if it can help people aged 18 to 80 with back and leg pain feel better.
Quick facts
| Phase | Phase 4 |
|---|---|
| Study type | Interventional |
| Ages | 18 Years to 80 Years |
| Sex | All |
| Enrollment | 50 (estimated) |
| Sponsor | Primus Pharmaceuticals Industry-sponsored |
| Locations | 24 sites (Auburn, Alabama and 23 other locations) |
| Status | Recruiting |
| Started | November 15, 2023 |
| Main results expected | November 15, 2026 |
| Study ends | November 15, 2026 |
| Registry record updated | September 14, 2026 |
| Trial ID | NCT06157177 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are adults aged 18 to 80 experiencing newly occurring low back pain with or without sciatica and a baseline pain score of 6 or higher.
✕Probably not a fit
Patients currently using other skeletal relaxants, pain relievers, or specific medications like cimetidine or monoamine oxidase inhibitors may not benefit from this study.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This clinical trial aims to evaluate the effectiveness of a modified metaxalone 640 mg in alleviating pain associated with acute lumbosacral musculoskeletal conditions, specifically sciatica and lumbar spinal stenosis. Participants aged 18 to 80 with newly occurring back or leg pain will be randomly assigned to receive either the active treatment or a placebo in a double-blind manner. The study will assess pain levels, physical activity interference, and sleep disruption through surveys conducted before treatment and one week after. The trial is designed to gather robust data on the medication's efficacy compared to a look-alike substance without active ingredients.
Why it matters
Potential benefit: If successful, this treatment could significantly reduce pain and improve quality of life for patients suffering from acute low back and leg pain.
How similar studies have gone: Other studies have shown promise in using modified formulations of existing medications for pain relief, suggesting potential success for this approach.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * No clinically significant conditions impacting quality or quantity of pain * Baseline Numeric Pain Scale ≥ 6 * Capable of answering text or email survey reminders * Low back pain with or without sciatica Exclusion Criteria: * Current use of other skeletal relaxants * Current use of other pain relievers * Current use of cimetidine or monoamine oxidase inhibitors
Where it's running
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Robert Levin, MD
Clearwater, Florida, United States Recruiting -
5. CZ Rheumatology
Coral Springs, Florida, United States Recruiting -
Arthritis and Osteoporosis Treatment and ResearchCenter
Miami, Florida, United States Recruiting -
CZ Rheumatology
Miami Beach, Florida, United States Recruiting -
Bay Area Rheumatology
Oldsmar, Florida, United States Recruiting -
Arthritis and Rheumatology Center of MI
Sterling Heights, Michigan, United States Recruiting
Show 18 more locations
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Cumberland Rheumatology
Crossville, Tennessee, United States Recruiting -
Heritage Rheumatology & Arthritis Care
Colleyville, Texas, United States Recruiting -
East Alabama Arthritis Center
Auburn, Alabama, United States Active not recruiting -
Sean Wollaston, MD
Valley Village, California, United States Active not recruiting -
Arthritis and Osteoporosis Center
Aventura, Florida, United States Active not recruiting -
William Sunshine, MD
Boca Raton, Florida, United States Active not recruiting -
4. Palm Beach Rheumatology and Wellness
Jupiter, Florida, United States Active not recruiting -
Family Arthritis Center
Loxahatchee Groves, Florida, United States Active not recruiting -
Arthritis and Rheumatology Center of South Florida
Margate, Florida, United States Active not recruiting -
Arthritis and Rheumatic Care Center
South Miami, Florida, United States Active not recruiting -
Arthritis Research and Treatment Center
Stockbridge, Georgia, United States Active not recruiting -
Jayashree Sinha, MD 1
Clovis, New Mexico, United States Active not recruiting -
Carolina Rheumatology
Fayetteville, North Carolina, United States Active not recruiting -
Ohio Arthritis and Osteoporosis Center of Southwest Ohio
Springboro, Ohio, United States Active not recruiting -
Integrative Rheumatology of South Texas
Harlingen, Texas, United States Active not recruiting -
Southwest Research Group
Mesquite, Texas, United States Active not recruiting -
DFW Rheumatology
Red Oak, Texas, United States Active not recruiting -
Northern Virginia Center for Arthritis
Annandale, Virginia, United States Active not recruiting
Study contacts
- Study coordinator: S Sodhi
- Email: simi@illumination.health
- Phone: 205-202-0739
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.