Excellent
"My husband suffers from chronic sinitus. A few years ago he also started needing a c-pap at night. He struggled for months not being able to breath even with the c-pap. I found an insert that he can put into the c-pap hose and each night he adds a couple drops of Breathe Ease. He loves it and he can breath through the night. Its been years and he still uses it every night."