cough and nasal congestion
"I have been taking the 1200mg for about 5 days now (every 12 hours as directed). I have had NO side effects. My body is very sensitive to certain types of medications, but this has only helped me. I started out with a bad cough and chest cold. After taking Mucinex for a couple of days I noticed the coughing decreasing. I now have a stuffy nose/sinus pain- but it also has helped with the congestion."