cough
"I was prescribed Tussionex for a cough associated with viral pneumonia. It was excellent for suppressing my cough.  However, I felt as if I'd had a couple of Margaritas, so I was only able to take it before bedtime instead of every 12 hours or I couldn't have functioned at work. On the positive side, it did eliminate the constant cough and allow me a good night's sleep.  As another reviewer noted, I also found it extremely constipating.  I advise increasing your liquid intake and possibly taking an over the counter stool softener while using Tussionex."