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A member asked:
I was told that allegra can give a false positive on a urine drug test so my question is how long will it be in my system?
A doctor has provided 1 answer
Allegra: Allegra won't alter your urine drug screen. Perhaps Allegra-D that has a decongestant in it may. Typically it may linger in your urine for 4-5 days.
Answered 6/1/2021
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