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Can mucinex singulair or benadryl cause a false positive for amphetamine?

Answers (1)

Inactive 24 Jun 2011

1.Mucinex (children´s cough) contains dextromethorphan and Can Cause False Positive For Heroin, Opiates, Morphine.

2.Mucinex D contains guaifenesin and pseudoephedrine, this last one ( pseudoephedrine ) Can Cause False Positive For Amphetamines (speed).

3.Benadryl contains diphenhydramine - Can Cause False Positive PCP results.

https://www.drugs.com/article/drug-testing.html
https://alwaystestclean.com/false-positive-drug-test-facts/

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