deltatrials
Recruiting PHASE4 INTERVENTIONAL 2-arm NCT03642028

Suvorexant: A Dual Orexin Receptor Antagonist for Treating Sleep Disturbance in Posttraumatic Stress

Suvorexant: A Dual Orexin Receptor Antagonist for Treating Sleep Disturbance inPosttraumatic Stress

Sponsor: VA Office of Research and Development

Conditions Sleep Initiation and Maintenance Disorders Stress Disorders, Posttraumatic
Interventions Placebo Suvorexant
Updated 19 times since 2018 Last updated: Jul 17, 2025 Started: Aug 30, 2019 Primary completion: Dec 31, 2025 Completion: Dec 31, 2025
This information is for research purposes only and is not medical advice. Consult a healthcare provider before making any medical decision.

A PHASE4 clinical study on Sleep Initiation and Maintenance Disorders and Stress Disorders, Posttraumatic, this trial is actively recruiting participants. The trial is conducted by VA Office of Research and Development and has accumulated 19 data snapshots since 2019. Longitudinal tracking of this trial contributes to a broader understanding of treatment development timelines.

Status Flow

~Sep 2018 – ~Dec 2018 · 3 months · monthly snapshot~Dec 2018 – ~Jan 2019 · 31 days · monthly snapshot~Jan 2019 – ~Feb 2019 · 31 days · monthly snapshot~Feb 2019 – ~May 2019 · 3 months · monthly snapshot~May 2019 – ~Jun 2019 · 31 days · monthly snapshot~Jun 2019 – ~Sep 2019 · 3 months · monthly snapshot~Sep 2019 – ~Oct 2019 · 30 days · monthly snapshot~Oct 2019 – ~Mar 2020 · 5 months · monthly snapshot~Mar 2020 – ~Aug 2020 · 5 months · monthly snapshot~Aug 2020 – ~Jan 2021 · 5 months · monthly snapshot~Jan 2021 – ~Feb 2021 · 31 days · monthly snapshot~Feb 2021 – ~Jan 2022 · 11 months · monthly snapshot~Jan 2022 – ~Dec 2022 · 11 months · monthly snapshot~Dec 2022 – ~Jan 2024 · 13 months · monthly snapshot~Jan 2024 – ~Jul 2024 · 6 months · monthly snapshot~Jul 2024 – ~Aug 2024 · 31 days · monthly snapshot~Aug 2024 – ~Sep 2024 · 31 days · monthly snapshot~Sep 2024 – ~Aug 2025 · 11 months · monthly snapshot~Aug 2025 – present · 11 months · monthly snapshot

Change History

19 versions recorded

  1. Aug 2025 — Present [monthly]

    Recruiting PHASE4

  2. Sep 2024 — Aug 2025 [monthly]

    Recruiting PHASE4

  3. Aug 2024 — Sep 2024 [monthly]

    Recruiting PHASE4

  4. Jul 2024 — Aug 2024 [monthly]

    Recruiting PHASE4

  5. Jan 2024 — Jul 2024 [monthly]

    Recruiting PHASE4

▶ Show 14 earlier versions

  1. Dec 2022 — Jan 2024 [monthly]

    Recruiting PHASE4

  2. Jan 2022 — Dec 2022 [monthly]

    Recruiting PHASE4

  3. Feb 2021 — Jan 2022 [monthly]

    Recruiting PHASE4

  4. Jan 2021 — Feb 2021 [monthly]

    Recruiting PHASE4

  5. Aug 2020 — Jan 2021 [monthly]

    Recruiting PHASE4

  6. Mar 2020 — Aug 2020 [monthly]

    Recruiting PHASE4

  7. Oct 2019 — Mar 2020 [monthly]

    Recruiting PHASE4

    Status: Not Yet Recruiting → Recruiting

  8. Sep 2019 — Oct 2019 [monthly]

    Not Yet Recruiting PHASE4

  9. Jun 2019 — Sep 2019 [monthly]

    Not Yet Recruiting PHASE4

  10. May 2019 — Jun 2019 [monthly]

    Not Yet Recruiting PHASE4

  11. Feb 2019 — May 2019 [monthly]

    Not Yet Recruiting PHASE4

  12. Jan 2019 — Feb 2019 [monthly]

    Not Yet Recruiting PHASE4

  13. Dec 2018 — Jan 2019 [monthly]

    Not Yet Recruiting PHASE4

  14. Sep 2018 — Dec 2018 [monthly]

    Not Yet Recruiting PHASE4

    First recorded

Eligibility Summary

No eligibility information available.

Contact Information

Sponsor contact:
  • VA Office of Research and Development
Data source: VA Office of Research and Development

For direct contact, visit the study record on ClinicalTrials.gov .

Study Locations