Cough
"Works very quickly after taking it. However, supposed to last 12 hours and after about 5 hours I was coughing again and couldn&#039;t take anything due to the medicine still being in my system (12 hours wasn&#039;t over). I also had to go to the bathroom (upset stomach) after taking but I am not sure if there is a correlation. I do think it works much better than any other over the counter cough suppressant that I have tried with this cough, and this was a very terrible cough!"