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


Inactive 24 June 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.

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benadryl, mucinex, singulair, amphetamine

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