# A Comparison of the Physiological and Behavioral Effects of Suvorexant and Zolpidem in Healthy Volunteers: A Randomized, Double-blind, Placebo Controlled Study

> **NCT04273776** · EARLY_PHASE1 · ACTIVE_NOT_RECRUITING · sponsor: **Walter Reed Army Institute of Research (WRAIR)** · enrollment: 90 (estimated)

## Conditions studied

- Performance Enhancing Product Use

## Interventions

- **DRUG:** Suvorexant 10 mg
- **DRUG:** Zolpidem
- **DRUG:** Placebos

## Key facts

- **NCT ID:** NCT04273776
- **Lead sponsor:** Walter Reed Army Institute of Research (WRAIR)
- **Sponsor class:** FED
- **Phase:** EARLY_PHASE1
- **Study type:** INTERVENTIONAL
- **Status:** ACTIVE_NOT_RECRUITING
- **Start date:** 2019-12-01
- **Primary completion:** 2024-11-21
- **Final completion:** 2025-12-12
- **Target enrollment:** 90 (ESTIMATED)
- **Last updated:** 2025-04-03


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04273776

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04273776, "A Comparison of the Physiological and Behavioral Effects of Suvorexant and Zolpidem in Healthy Volunteers: A Randomized, Double-blind, Placebo Controlled Study". Retrieved via AI Analytics 2026-06-16 from https://api.ai-analytics.org/clinical/NCT04273776. Licensed CC0.

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