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Dr. D. Love
Dr. D. Love, Doctor
Category: Drug Testing
Satisfied Customers: 18673
Experience:  Family Physician for 10 years; Hospital Medical Director for 10 years.
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Is there anything OTC that will cause a false positive

Customer Question

Is there anything OTC that will cause a false positive Barbiturate UDS?
Submitted: 1 year ago.
Category: Drug Testing
Customer: replied 1 year ago.
I had a false positive and the only things I take are Bontril, Flexeril, Zantac, and Donnatol.
Expert:  Dr. D. Love replied 1 year ago.

Hello from JustAnswer.

Actually, the Donnatal contains a barbiturate, specifically phenobarbital. So, if you had a positive result while taking this list of medicines, it would not be a false positive. It is a true positive from the Donnatal.

When someone has a legal prescription for Donnatal, there would typically not be an issue with a positive UDS for barbiturates, although documentation of the legal prescription may need to be provided.

If I can provide any additional information, please let me know.