Good night, Polly.
May Angels surround you as you slip into dream-land!
Yes, Polly - it is a prescription.
I will freepmail you some links about salt water and nostril wash.
I have been doing it for about 2 months - with warm salt water and q-tips. I have a friend who is VERY health conscious - and she told me yesterday - that she has been doing this for over a year!