I need to know if any of my medications can cause a false positive methamphetamine and amphetamine result on a urine screen. effexor xr hydroxyzine prazosin lunesta?

Those noted medications were not on the list of drugs which can cause false positive urine test for amphetamine by Drugs.com.

According to documentation from the FDA and the drug reference Micromedex, the medication in Effexor XR may cause a false positive for amphetamine - depending on which urine screen was used. The best resource for further information now is to consult the diagnostic company or laboratory where the lab was done to find out what their false positive rate is.