Discussions that mention bupropion

Drug Interactions / Side Effects board

The only prescription drug that I've read about that could cause a false positive urine test specifically for speed or amphetamine-like substances is the anti-depressant Wellbutrin (bupropion). Can't find any info that Paxil or clonazepam would produce a similar possibility.

If the urine test was not taken properly though, some over-the-counter meds containing sudafed or epinephrine could possibly give a false pos. for speed.

Whatever happens tomorrow, make sure your friend shows up with proof that he has legal prescriptions for the drugs he is taking.

Good luck!