OMG just failed a drug test and I dont do drugs, got home and googled one of my meds come to find out it causes a positive for mariquana, I freaked out because I didnt know at the time and the job I was applying for said no till final results come back from lab, I cried and cried because I knew I didnt do drugs but felt like i needed to convince them I didnt how horrible, so when i got home i checked a med that i was taking for reflux and sure enough it can cause a false positive for drugs, so for anyone on PROTONIX beware!!!!!