Cough
"I had flu with a bad cough. The other flu symptoms resolved after a few days but the cough did not. I was prescribed benzonatate as a cough suppressant. I took one capsule, and within about 20 minutes, my sinuses were clogged and congested. This means I can&#039;t breathe through my nose, which means I&#039;m breathing through my mouth, which makes my mouth and throat dry, which causes me to cough, which is the thing that was supposed to go away with this medicine. It&#039;s done absolutely nothing for the cough, and just gave me a cold on top of flu."