N-acetylcysteine (600-900 mg three times per day) acts as a mucolytic to relieve sinus congestion.

“I ended up doing that at a dosage of anywhere from 600 to 900 milligrams three times per day so it was a 600 to 900 milligram capsule depending on which brand I purchased a lot of different versions of this out there on the market I took it morning late morning and afternoon and indeed it is a powerful mucolytic the mucus just starts flowing out of you you better have an extra box of tissues handy and that greatly relieved the pressure in my sinuses”

“I had a very good experience with Knack and the use of knack and acetal cysteine as a decongestant and also as a way to prevent getting colds and flu”

“netal is used in certain clinics overseas and in the US as a way to treat cystic fibrosis because it's also a mucolytic and cystic fibrosis is the buildup of fluid in the lungs and a mucolytic substance is something that loosens up the mucus and allows it to flow more readily out of different cavities of the body including the lungs the nasal passages and sinuses”

“Knack which some people take it's a mucolytic it's actually a great decongestant yep if uh you're congested and it increases glutathione that's my understanding”

“it's a mucolytic yes because mu mucus again the reason why mucus is so thick is because of those SS bonds so when you put Knack in there it breaks it off and now it's liquidy”

“it's used to treat cystic fibrosis and the uh to counteract the buildup of fluid in the lungs as I understand”

“I find that neck in addition to increasing glutathione which can only be a good thing — is a great decongestant”