3 doctors weighed in:

What medications show up as methadone in your system I haven't taken it why did it show up in my drug screen?

3 doctors weighed in
Dr. Alan Wartenberg
Addiction Medicine
2 doctors agree

In brief: Several possiblities

Three commonly used medications can cause false positive methadone tests on the screening test - two antihistamines commonly used - diphenhydramine (Benadryl®) and doxylamine (Unisom®).
Also, Seroquel® (quetiapine), a commonly used antipsychotic and anti-anxiety medication can do this. However, confirmatory tests should show that it is a FALSE positive.

In brief: Several possiblities

Three commonly used medications can cause false positive methadone tests on the screening test - two antihistamines commonly used - diphenhydramine (Benadryl®) and doxylamine (Unisom®).
Also, Seroquel® (quetiapine), a commonly used antipsychotic and anti-anxiety medication can do this. However, confirmatory tests should show that it is a FALSE positive.
Dr. Alan Wartenberg
Dr. Alan Wartenberg
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