# Survey on Long-Term Use of BI-Sifrol® Tablets in Patients With Restless Legs Syndrome

> **NCT01174459** · — · COMPLETED · sponsor: **Boehringer Ingelheim** · enrollment: 571 (actual)

## Conditions studied

- Restless Legs Syndrome

## Interventions

_None listed._

## Key facts

- **NCT ID:** NCT01174459
- **Lead sponsor:** Boehringer Ingelheim
- **Sponsor class:** INDUSTRY
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** COMPLETED
- **Start date:** 2010-08
- **Primary completion:** 2013-08
- **Final completion:** 2013-08
- **Target enrollment:** 571 (ACTUAL)
- **Last updated:** 2014-08-29


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT01174459

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT01174459, "Survey on Long-Term Use of BI-Sifrol® Tablets in Patients With Restless Legs Syndrome". Retrieved via AI Analytics 2026-06-01 from https://api.ai-analytics.org/clinical/NCT01174459. Licensed CC0.

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