When you take the NAC/Mucinex do you take at the same time and how long before airway clearance? I sometimes find that taking something does not work till the next day! Do you get any side effects from taking both daily? I am never able to take things every day or they back fire on me so to speak. They will either stop helping or I will get side effects. In my case I also find that unusual things help the mucus to come up more thoroughly such as Zinc (liquid tincture drops). Zinc also seems to pull me out of exacerbations but I cannot take it too often.