the short answer to your question is: no. none of the ingredients in advil (generic name: ibuprofen) or advilpm (which is simply a combination of ibuprofen and the antihistamine diphenhydramine) would cause a false-positive result for benzodiazepines on a urine drug screen. the chemical structure of benzodiazepines doesn't remotely resemble those of any of the ingredients in the over-the-counter medications you were taking. the only substances known to cause a false-positive test for benzodiazepines are oxaprozin (which is a prescription arthritis medication) and sertraline (which is an antidepressant medication with the brand name zoloft). is it possible you take sertraline? if so that could be the culprit in your urine screen. i'm sorry this happened to you and hope you can get it resolved. wishing you well! i tested pisitive for benzo and i to was also taking advil pms
can the active ingredent diphenhydramine in advil pm cause a false positive drug screen for benzodiazepine? . i did a little research myself & need some clarification please. i was experiencing chronic back pain so i was taking advil during the day & advil pm at night for a length of time & i came back positive for benzodiazepines on a urine test.