I have been using this for years, mostly during the winter months. If I don鈥檛 take it at least once a day (although twice is better), I wake up in the morning & I鈥檓 coughing for 1-2 hours before it becomes a once in a while cough. At night I wake up multiple times coughing. An annoying tickle cough that won鈥檛 go away & I can鈥檛 go back to sleep for hours.
As for my nose congestion, well being unable to breath due to all the mucus in my nose & back of the throat, makes day & night miserable. Taking Mucinex reduces this greatly. Some days it鈥檚 gone completely & some days it鈥檚 reduced. I know that if I didn鈥檛 take it, I would be 100 times worse in the winter & in the summer I only take it once in a while but I have to take it for several days to get completely clear.