I just happened to check the forum here after a very long time away.
I am thrilled to read the posts regarding Arginine supplementation.
I have not read through all of the posts regarding Arginine that Carrie, Hope, and Kim have written, but I have seen that The Hospital For Sick Children in Toronto Canada is in Phase II of a clinical trial using Inhaled L-Arginine to increase NO in the CF lung space.

SO MUCH LOVE to Everyone.
Patricia