New drug aims to fix body clocks of night owls

NCT ID NCT04652882

First seen Dec 09, 2025 · Last updated Jun 06, 2026 · Updated 23 times

Summary

This study tests a medication called tasimelteon to see if it can help people with Delayed Sleep-Wake Phase Disorder (DSWPD) fall asleep earlier. DSWPD makes it hard to fall asleep at a normal time, causing a late sleep schedule. The trial will compare tasimelteon to a placebo in 70 adults to measure changes in sleep timing and quality.

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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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Contacts and locations

Study contacts

  • Contact

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

Locations

  • Vanda Investigational Site

    RECRUITING

    Los Angeles, California, 90025, United States

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  • Vanda Investigational Site

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    Redwood City, California, 94063, United States

    Contact Phone: •••-•••-••••

  • Vanda Investigational Site

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    Aurora, Colorado, 80045, United States

    Contact Phone: •••-•••-••••

  • Vanda Investigational Site

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    Boston, Massachusetts, 02115, United States

    Contact Phone: •••-•••-••••

  • Vanda Investigational Site

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    St Louis, Missouri, 63123, United States

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    New Hyde Park, New York, 11042, United States

    Contact Phone: •••-•••-••••

  • Vanda Investigational Site

    RECRUITING

    Cincinnati, Ohio, 45212, United States

    Contact Phone: •••-•••-••••

  • Vanda Investigational Site

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    Cleveland, Ohio, 44195, United States

    Contact Phone: •••-•••-••••

  • Vanda Investigational Site

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    Columbia, South Carolina, 29201, United States

    Contact Phone: •••-•••-••••

  • Vanda Investigational Site

    RECRUITING

    San Antonio, Texas, 78229, United States

    Contact Phone: •••-•••-••••

  • Vanda Investigational Site

    RECRUITING

    Sherman, Texas, 75092, United States

    Contact Phone: •••-•••-••••

  • Vanda Investigational Site

    ACTIVE_NOT_RECRUITING

    Innsbruck, 6020, Austria

  • Vanda Investigational Site

    RECRUITING

    Vienna, 1090, Austria

    Contact Phone: •••-•••-••••

  • Vanda Investigational Site

    RECRUITING

    Berlin, 10117, Germany

    Contact Phone: •••-•••-••••

  • Vanda Investigational Site

    RECRUITING

    Hamburg, 20253, Germany

    Contact Phone: •••-•••-••••

  • Vanda Investigational Site

    RECRUITING

    Marburg, 35043, Germany

    Contact Phone: •••-•••-••••

  • Vanda Investigational Site

    RECRUITING

    Schwerin, 19053, Germany

    Contact Phone: •••-•••-••••

Conditions

Explore the condition pages connected to this study.