Effects of Caffeine on Methacholine Challenge and Exhaled Nitric Oxide Levels.

To investigate whether or not the ingestion of caffeine with alter airway responsiveness to methacholine and/or change the level of exhaled nitric oxide.

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Key information

Conditions

Asthma Bronchial Diseases Hypersensitivity Hypersensitivity, Immediate Immune System Diseases Lung Diseases Lung Diseases, Obstructive Respiratory Hypersensitivity Respiratory Tract Diseases

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

University of Saskatchewan

Saskatoon, Saskatchewan, S7N 0W8, Canada

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

clinical diagnosis of asthma
FEV1 greater than 65%

Exclusion criteria

asthma is poorly controlled
presence of other airway disease (e.g. COPD)

Treatment and study plan

Caffeine

Other

Starbuck's Grande Pike Roast coffee

No caffeine

Other

Starbuck's Grande Pike Roast Decaffeinated Coffee

Primary outcomes

methacholine pc20

Time frame: 1 hour post ingestion

Sponsors and collaborators

Lead sponsor

University of Saskatchewan

Other

Registry information

Official study title

The Effects of Caffeine on Exhaled Nitric Oxide Levels and Methacholine PC20

Important dates

Study start: 2010
Primary completion: 2010
Study completion: 2010
First posted: Jan 27, 2010
Registry last updated: Oct 7, 2010

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

Published trials that share one or more normalized conditions with this study.

Completed