cough and nasal congestion
"My PCP suggested I take this to help with severe congestion. I took 3 doses of the 12 hours (max strength) at the prescribed intervals. Basically one that afternoon, then one the next morning and one that evening. That night I COULD NOT SLEEP.  I have never had problems sleeping, and usually could find some way to read for a bit or do a relaxation exercise in the event it took longer than normal.

I'm normally asleep by 10 or 11. It's now 4 am, I am not one bit sleepy and I have to get up for work in 2 hours. Should be an interesting day."