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NCT00666939 · ClinicalTrials.gov registry record · Phase 3
A Study of Single-Dose Gabapentin in Subjects With Transient Insomnia Induced by a Sleep Phase Advance
A Phase 3 study, sponsored by Pfizer's Upjohn has merged with Mylan to form Viatris.
- Completed
- Registry status
- Phase 3
- Development phase
- 773
- Enrollment target
NCT00666939: Completed Phase 3 study, sponsored by Pfizer's Upjohn has merged with Mylan to form Viatris.
NCT00666939 is a Phase 3 study that has completed, run by Pfizer's Upjohn has merged with Mylan to form Viatris. The registered enrollment target is 773 participants, roughly in line with the 772-participant average among 15,282 other Phase 3 trials with a reported enrollment target. According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT00666939, a Phase 3 study, has completed, sponsored by Pfizer's Upjohn has merged with Mylan to form Viatris.
- COMPLETED
- Registry status
- Phase 3
- Development phase
- 773 participants
- Enrollment target
Study Summary
The purpose of this study is to assess the effect of gabapentin as compared to placebo on sleep, using subjective sleep measurements, in subjects with transient insomnia induced by a sleep phase advance.
Interventions
- DRUG Placebo
- DRUG Gabapentin
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 773 participants |
| Start Date | 2004-10 |
| Est. Completion | 2005-01 |
| Phase | Phase 3 |
What the finished NCT00666939 record still lists
NCT00666939 is an interventional study that assigns participants to a tested intervention. The registered 773 participants enrollment target is mid-sized for trials with a published cap, roughly in line with the 772-participant average among 15,282 other Phase 3 trials with a reported enrollment target.
The record links to 0 conditions, and to 2 interventions - of which Placebo is the first listed.
NCT00666939 does not publish any study locations in the registry export this page uses.
Frequently Asked Questions
What is clinical trial NCT00666939 about?
NCT00666939 is a clinical study titled "A Study of Single-Dose Gabapentin in Subjects With Transient Insomnia Induced by a Sleep Phase Advance". The purpose of this study is to assess the effect of gabapentin as compared to placebo on sleep, using subjective sleep measurements, in subjects with transient insomnia induced by a sleep phase advance.
What is the current status of trial NCT00666939?
This trial is currently completed. It is a Phase 3 study. The enrollment target is 773 participants. The study started on 2004-10. Estimated completion is 2005-01.
What interventions are being tested in trial NCT00666939?
The interventions under investigation include: Placebo (DRUG), Gabapentin (DRUG).
Who is sponsoring clinical trial NCT00666939?
This trial is sponsored by Pfizer's Upjohn has merged with Mylan to form Viatris, which has 158 total clinical trials registered on ClinicalTrials.gov.
Learn More About Clinical Trials
How this trial's enrollment target compares
Where NCT00666939's enrollment target sits among peer trials
773 440th of 2000 higher than 1,561 of 2,000 other Phase 3 trials
participants (enrollment target), bucketed by value
Each bar is a band; taller bars hold more other Phase 3 trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source ClinicalTrials.gov registry export · 2026-08-08
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