Anti-histamines and Methacholine Challenges.

Condition:   AsthmaInterventions:   Drug: Diphenhydramine;   Drug: cetirizine;   Drug: desloratadine;   Drug: placeboSponsor:   Don CockcroftCompleted - verified April 2015

Source: ClinicalTrials.gov - October 31, 2013 Category: Research Source Type: clinical trials