> I swear I read a report somewhere that said something like PE is effective iff you take twice the dose on the box or you take it with other drugs (I think ibuprofen was tested?)

Oh yeah combine with Tylenol and increase the dose if you want to experience adverse cardiac events. The oral form of PE is really only good for jacking up blood pressure, it doesn't help with congestion more than placebo: https://pmc.ncbi.nlm.nih.gov/articles/PMC4500855/