Works for congestion
I bought this more experimentally to see if it would affect congestion, and I was pleasantly surprised to see an insert in the box that it had FDA Clearance to be used to see if it would.
Definitely notice some increased sinus drainage immediately after using the unit and seems to work, which is better than taking Sudafed. I'm hoping over time this results in sinuses also acting more normal. Can breathe a bit better - I was outside in a lot of allergy conditions and went swimming with no consequences yesterday (swimming underwater after I'm sick is often impossible), so that's a good sign.