I have witnessed the power of this machine on a friend | coworker. She went from terrible to wonderful in a period of 5 days. This machine is a 'must have' for anyone who suffers from allergy symptoms or chronic sinus problem symptoms.
It comes with a booklet written by Murry Grossan - the ENT (Ear, Nose and Throat) Doctor who invented this machine. Do not be fooled by imitations. The pulsatile irrigation this device delivers has a method and logic behind it. You cannot begin to understand the relief you can find until you try it for yourself.
This was said in general. For specific questions about your personal situation, ask your doctor for the answers to those questions.