Airway Response to Repeat Allergen Challenge and the Effect of Ibuprofen in Mild Atopic Asthma

Inclusion Criteria: * diagnosis of mild asthma, currently well controlled requiring only a bronchodilator (e.g. salbutamol) as needed and infrequently * has allergies that trigger asthma * responds to methacholine challenge at 16mg/ml or less * has FEV1 \> 69.5% predicted Exclusion Criteria: * respiratory illness within 4 weeks * other medical condition assessed by the principal investigator that would put the participant at risk or influence the integrity of the data * pregnant or lactating females * hypersensitivity to ibuprofen