From: Clinical validation of controlled exposure to birch pollen in the Environmental Exposure Unit (EEU)
Medication | Duration of washout prior to the pollen exposure visit |
---|---|
Beta-blockers, alpha-adrenoceptor blockers, currently receiving allergen immunotherapy | Not permitted |
Topical alpha-adrenergic agonists | 48 h |
H1 receptor antagonists | 7 days |
Topical corticosteroidsa | 7 days |
Anticholinergics | 7 days |
Intranasal or inhaled corticosteroids | 14 days |
Intranasal or inhaled cromolyn | 14 days |
Tricyclic antidepressants and monoamine oxidase inhibitors | 14 days |
Leukotriene inhibitors | 14 days |
Systemic corticosteroids (oral) | 30 days |
Depot corticosteroids | 60 days |