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A member asked:

Is there an antihistimine that is safe to take and will not give you a dirty urine test, a false positive that benadrl can sometimes do?

A doctor has provided 1 answer
Dr. Doanh Nguyen, md, faaaai answered

Specializes in Allergy and Immunology

Urine drug test : Benadryl (diphenhydramine) may cause a false positive drug test to Methadone in screening urine drug test but there are no reports of Claritin / zyrtec / allergra being a problem. However, Claritin d, zyrtec d, allergra d may cause positive drug test to amphetamine since they contain pseudonephrine.

Answered 6/28/2014

5.1k views

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