She may have done what you just did, and confused pseudoephedrine (which works) with phenylephrine (the one that doesn't). 😜
(In all fairness, they're both multisyllable weird Greekish words that have the same first letter and the same ending, and I've come close to mixing them up a couple of times myself.)
As a nurse (not nurse-practitioner) I don't think she has any power to prescribe. All she can do is offer over-the-counter meds and advise the person to see a doctor if she thinks that's warranted.
There was one amusing article which I seem unable to find again that suggested American cold sufferers should get their hands on pseudoephedrine by obtaining crystal meth (which is more widely available and more stably supplied) and running the reaction the FDA was so afraid of in reverse to get the decongestant. Maybe we should have tried doing that up here too. 🤔
It's still a supported architecture in Gentoo. I expect it will limp along there for as long as there is viable kernel source (current or LTS) and at least one interested maintainer. So if you have an Itanium machine lying around, you can install a current Linux on it. As long as you're willing to follow a long set of instructions, anyway.