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A member asked:
Will zyrtec (cetirizine) or clartin effect a methacholine test?
A doctor has provided 1 answer
Methacholine test: The following medicines should be held IF POSSIBLE for three (3) days before the test: Atarax, Zyrtec, Allegra, Claritin, and Benadryl (diphenhydramine).
Answered 5/18/2015
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