My son takes supplements for working out and he drinks energy drinks and takes aleve/advil. what would cause him to test positive for benzos?

Supplements: Supplements sold to gullible men for "working out" contain various agents not on the labels. Often they include controlled or illegal substances. It is a huge scandal. Since the claims for ALL these supplements are BOGUS, he should throw them all away. Throw out the "proteins" and the stimulants and the"performance enhancing" and the vitamins. All of them.

Depends: There are several ways they test for drug exposure and some screening tests (urine) are less reliable than other testing methods. The NSAID medications like Aleve or ibuprofen may be a problem of those you list in a screening test. Supplements do not require approval or testing by the FDA & are not tested to assure contents ,so they may contain a variety of unlisted components that could make a +

Energy: Drinks and supplements have different unregulated chemicals and elements that may give a positive test especially if taking OTC sleep medication