# A Study to Evaluate Efficacy and Safety of Zolpidem Modified Release Formulation in Insomnia Patients

> **NCT00956319** · PHASE4 · COMPLETED · sponsor: **Astellas Pharma Inc** · enrollment: 42 (actual)

## Conditions studied

- Sleep Initiation and Maintenance Disorders
- Primary Insomnia

## Interventions

- **DRUG:** Zolpidem MR
- **DRUG:** Estazolam

## Key facts

- **NCT ID:** NCT00956319
- **Lead sponsor:** Astellas Pharma Inc
- **Sponsor class:** INDUSTRY
- **Phase:** PHASE4
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2009-05
- **Primary completion:** 2010-11
- **Final completion:** 2010-11
- **Target enrollment:** 42 (ACTUAL)
- **Last updated:** 2011-10-06


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT00956319

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT00956319, "A Study to Evaluate Efficacy and Safety of Zolpidem Modified Release Formulation in Insomnia Patients". Retrieved via AI Analytics 2026-07-19 from https://api.ai-analytics.org/clinical/NCT00956319. Licensed CC0.

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