I take it every day; deviated septum and allergic to everything even after decades of immunotherapy. Maybe I should get surgery. But this is easier.
You can't take pseudoephedrine every day. Nor is pseudoephedrine used for allergies - it is a decongestant, not an antihistamine. Nor does immunotherapy "solve" allergies.
A simple google search before posting would have made your fictitious scenario a little bit more believable.
Btw I got septum surgery and turbinate reduction and it was life-changing. Previously used antihistamines and nasal steroids every day. Even when my nose produces mucus, its doesn’t clog now. Procedure cost me $100 through Kaiser (cost them probably $75k if you believe all the various documents they sent me).