Could a muscle relaxant lift depression? new trial underway

NCT ID NCT07621237

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This Phase 2 trial tests whether TNX-102 SL, a tablet taken under the tongue at bedtime, can improve depression symptoms in adults with moderate to severe major depressive disorder. About 360 participants will receive either the drug or a placebo nightly for 6 weeks. Researchers will measure changes in depression scores and monitor safety.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance

TNX-102 SL (cyclobenzaprine) taken as a tablet under the tongue at bedtime

What this could lead to

If it works, this could offer a new nightly treatment option for people with major depression, potentially easing symptoms with a different approach than standard antidepressants.

What could go wrong

This is an early Phase 2 trial, so results may not confirm effectiveness. The drug is a muscle relaxant repurposed for depression, and it may cause side effects like drowsiness or dizziness. Success is not guaranteed.

Disclaimer Read more

This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.

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Conditions

The condition(s) this trial relates to.

Depression depressive disorder major depressive disorder

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Contacts and locations

Study contacts

  • Contact

    Phone: •••-•••-•••• Email: •••••@•••••

Locations

  • Activmed Practices & Research, Llc - Methuen

    NOT_YET_RECRUITING

    Methuen, Massachusetts, 01844, United States

  • Artemis Institute For Clinical Research - San Diego

    NOT_YET_RECRUITING

    San Diego, California, 92123, United States

  • Austin Clinical Trial Partners

    NOT_YET_RECRUITING

    Austin, Texas, 78737, United States

  • Boeson Research Pvu

    NOT_YET_RECRUITING

    Provo, Utah, 84604, United States

  • Central Miami Medical Institute Llc.

    NOT_YET_RECRUITING

    Miami, Florida, 33125, United States

  • Chicago Research Center

    NOT_YET_RECRUITING

    Chicago, Illinois, 60634, United States

  • Clinical Neuroscience Solutions Inc. - Jacksonville

    NOT_YET_RECRUITING

    Jacksonville, Florida, 32256, United States

  • Clinical Neuroscience Solutions Inc. - Memphis

    NOT_YET_RECRUITING

    Mephis, Tennessee, 38119, United States

  • Clinical Neuroscience Solutions Inc. - Orlando

    RECRUITING

    Orlando, Florida, 32801, United States

  • Coastal Carolina Research Center

    NOT_YET_RECRUITING

    North Charleston, South Carolina, 29405, United States

  • Delricht Research - New Orleans

    RECRUITING

    New Orleans, Louisiana, 70115, United States

  • Delricht Research - Plano

    NOT_YET_RECRUITING

    Plano, Texas, 75024, United States

  • Delricht Research - Rockville

    NOT_YET_RECRUITING

    Rockville, Maryland, 20852, United States

  • Evergreen Clinical Trials

    NOT_YET_RECRUITING

    Norcross, Georgia, 30092, United States

  • IMA Clinical Research- Phoenix

    NOT_YET_RECRUITING

    Phoenix, Arizona, 85012, United States

  • Ima Clinical Research - Nyc Midtown

    NOT_YET_RECRUITING

    New York, New York, 10036, United States

  • Inland Psychiatric Medical Group, Inc. - Chino

    NOT_YET_RECRUITING

    Chino, California, 91710, United States

  • K2 Medical Research - Maitland

    NOT_YET_RECRUITING

    Maitland, Florida, 32751, United States

  • K2 Medical Research - Tampa

    NOT_YET_RECRUITING

    Tampa, Florida, 33634, United States

  • Medical Research Group of Central Florida

    NOT_YET_RECRUITING

    Orange City, Florida, 32763, United States

  • Nrc Research Institute

    NOT_YET_RECRUITING

    Orange, California, 92868, United States

  • Redbird Research

    NOT_YET_RECRUITING

    Las Vegas, Nevada, 89119, United States

  • Revival Research Institute, Llc - McKinney, Tx

    NOT_YET_RECRUITING

    McKinney, Texas, 75071, United States

  • Sunwise Clinical Research, Llc

    NOT_YET_RECRUITING

    Walnut Creek, California, 94596, United States

  • Synergy Research - San Diego

    NOT_YET_RECRUITING

    Lemon Grove, California, 91945, United States