I've tried the OTC nasal decongestants for a few years before giving up. I would just suffer without wasting my money. They never seemed to work for me. The neti pot worked better. I thought it was just me those pills didn't work for. Now science brings me comfort. A pox on the snake oil being sold!!
The behind the counter stuff works great but makes me feel 'speedy' and stimulated until it climaxes in a creepy anxious state. Feeling the effects of pseudoephedrine makes this chill person have extra compassion for people with anxiety. I never really understood it until using 'the good stuff'. Now I just suffer without it as well.