cough and nasal congestion
"Been sick for couple days with a horrible cold was recommended Mucinex. I bought Mucinex 600 Guafenesen extended release bi layered and it made me worse.  I've been up all night but 930 in the morning and I haven't slept a wink. Sleep is what helps heal and this does the opposite. I feel worse and  I've had a pounding headache for 10 hours now.  I'm very disappointed in this medication it should've said non drowsy on the box I would've never purchased it. $30.00 to feel like crap. It completely ruined my day if I want to be up all night I would've just drank a $1.00 cup of coffee."