@heathert Hello...saw your post on nebulizing saline. I am using the 4 ml that is premeasured but here is the difference ....it takes me more like 12-14 minutes to inhale it and then another 3 or 4 to huff and then to cough up the phlegm. Are you sure you are using 4ml as your nebulizing time seems very brief? From what I read you should breathe in and out slowly and deeply. Kate