# A Multiple Dose Comparison of Tiotropium Inhalation Capsules and Salmeterol Inhalation Aerosol.

> **NCT00274560** · PHASE3 · COMPLETED · sponsor: **Boehringer Ingelheim** · enrollment: 653 (actual)

## Conditions studied

- Pulmonary Disease, Chronic Obstructive

## Interventions

- **DRUG:** Tiotropium
- **DRUG:** Salmeterol

## Key facts

- **NCT ID:** NCT00274560
- **Lead sponsor:** Boehringer Ingelheim
- **Sponsor class:** INDUSTRY
- **Phase:** PHASE3
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2002-05-01
- **Primary completion:** 2003-03-27
- **Final completion:** —
- **Target enrollment:** 653 (ACTUAL)
- **Last updated:** 2023-12-01


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT00274560

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT00274560, "A Multiple Dose Comparison of Tiotropium Inhalation Capsules and Salmeterol Inhalation Aerosol.". Retrieved via AI Analytics 2026-06-26 from https://api.ai-analytics.org/clinical/NCT00274560. Licensed CC0.

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