Thank you for posting this question. I was going to do the same but assumed there would be no one else with the volume of mucus that I have (approx 3 ounces with my late AM nebulizing). Mine is also loose and prolific. I have chronic Pseudo and have not found a treatment option I can tolerate (thus far). I also have had Bronchiectasis for a very long time. Are you sure you are producing a cup each time?? Is it a guess or do you actually have a way to compare it to liquid ounces? What does it look like? Does your Dr offer any explanation as to such volume? Mine does not seem to know why but I do know that Pseudo is known to produce more volume. I think there is one other person on this forum who says she produces this kind of volume but not sure how it is measured.