cough and nasal congestion
"I used Mucinex D last year taking the recommended 1 pill every 12 hours and was fine, it helped so much with my horrible sinus infection.



I'm on day 3 of some nasty congestion and decided to take Mucinex D last night at 9 pm...DO NOT TAKE THIS IN THE AFTERNOON OR NIGHT IF YOU WANT TO SLEEP. I laid down at 10 pm because I felt like crap...I laid in bed until 2 am and finally fell asleep for a whole 3 hours. 



I do like this product, but I would just recommend taking it right away in the morning since it lasts 12 hours."