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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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Would Lisinopril,celexa,zantac,mag Ox Or Bisoprolol Cause Failed Drug Test?

My husband is on several medications for a variety of issues. He recently failed a urine and blood drug screen and does not use any type of illegal drug. This is his list of medications: lisinopril, celexa, zantac, mag ox, bisoprolol, as well as Nasacort allergy and loratadine for his summer allergies. Which of these can cause a false positive on a drug screen.
posted on Fri, 20 Jun 2014
Twitter Tue, 23 Aug 2016 Answered on
Twitter Wed, 24 Aug 2016 Last reviewed on
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Addiction Medicine Specialist,  's  Response
A lot:
celexa with cocaine
bisoprolol and decongestants cross react with methamphetamine.
First, the paper dipstick messes up about 5 to 10% of the time even when I am doing it. Second, the confirmatory test must be done and it has a much lower failure rate but the ones mentioned above still might cross react but proballby NOT. Third, it might not be false especially if someone takes a lot of odd supplements.
and I can go in for more detail wtih a directed question.
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Would Lisinopril,celexa,zantac,mag Ox Or Bisoprolol Cause Failed Drug Test?

A lot: celexa with cocaine bisoprolol and decongestants cross react with methamphetamine. First, the paper dipstick messes up about 5 to 10% of the time even when I am doing it. Second, the confirmatory test must be done and it has a much lower failure rate but the ones mentioned above still might cross react but proballby NOT. Third, it might not be false especially if someone takes a lot of odd supplements. and I can go in for more detail wtih a directed question.