Influence Of Different Airflow Resistances On Drug Effect Of 50μg Salmeterol And 6 μg Formoterol

This study has been completed.
Information provided by:
GlaxoSmithKline Identifier:
First received: May 16, 2006
Last updated: May 21, 2009
Last verified: May 2009
Effect of inhaled drugs administered as dry powder is not only dependent on drug efficacy but also on technical properties of the inhalers. Different inhalers have different internal resistances and therefore it is expected that patients with limited airflow may have different exposure rates of drugs delivered from different devices

Condition Intervention Phase
Drug: formoterol (TURBOHALER)
Drug: Salmeterol (DISKUS)
Phase 4

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Crossover Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: Single-Centre Randomised Open Crossover Study to Examine the Influence of Different Internal Resistances of Discus and Turbohaler Respectively on the Effects of Salmeterol and Formoterol in Asthmatic Subjects

Resource links provided by NLM:

Further study details as provided by GlaxoSmithKline:

Primary Outcome Measures:
  • Forced expiratory volume in 1 second (FEV1) under time curve 0.5-6 hours after inhalation of study medication

Secondary Outcome Measures:
  • Airway resistances and peak FEV1 measured 0.5, 1, 2, 4 and 6 hours after inhalation of study drug

Estimated Enrollment: 77
Study Start Date: January 2004
Intervention Details:
    Drug: formoterol (TURBOHALER) Drug: Salmeterol (DISKUS)
    Other Name: formoterol (TURBOHALER)

Ages Eligible for Study:   18 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No

Inclusion criteria:

  • Asthma Reversibility >15% and 200 ml in total FEV1 <85% of normal

Exclusion criteria:

  • Smoking history >20 pack years Treatment with ICS >500μg Fluticasone or aquivalent in the last 4 weeks Asthma exacerbation in the last 4 weeks
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00327353

GSK Investigational Site
Gauting, Bayern, Germany, 82131
GSK Investigational Site
Berlin, Germany, 14057
Sponsors and Collaborators
Study Director: GSK Clinical Trials, MD GlaxoSmithKline
  More Information

No publications provided

Responsible Party: Study Director, GSK Identifier: NCT00327353     History of Changes
Other Study ID Numbers: 101182, TURBOHALER Faktor
Study First Received: May 16, 2006
Last Updated: May 21, 2009
Health Authority: Germany: Federal Institute for Drugs and Medical Devices

Keywords provided by GlaxoSmithKline:
Airway resistance

Additional relevant MeSH terms:
Adrenergic Agents
Adrenergic Agonists
Adrenergic beta-2 Receptor Agonists
Adrenergic beta-Agonists
Anti-Asthmatic Agents
Autonomic Agents
Bronchodilator Agents
Molecular Mechanisms of Pharmacological Action
Neurotransmitter Agents
Peripheral Nervous System Agents
Pharmacologic Actions
Physiological Effects of Drugs
Respiratory System Agents
Therapeutic Uses processed this record on November 30, 2015