Excellent Investment
I have been taking NAC for 27 years since I am a smoker.  It helps to get the flem out of the lungs.  I normally take one a day, however, if I feel congested I take 2-3 capsules a day.  This is also good for bronchitis or any other chronic lung congestion.  Highly recommend.  NOW brand is a very good quality brand and also recommend it as well.
Rating: 5 stars