What Things Can Cause You to Test Positive for Amphetamines/methamphetamines?

Published June 8, 2010

I’m curious as to what substances can cause you to test positive on a drug test for methamphetamines/amphetamines, OTHER then actual meth. I heard that some diet drugs can, can anyone tell me any diet drugs that are available in today’s market OTC that could cause a false positive on a drug test?