cough
"After being unable to sleep for more than 15 minutes at a time for three nights in a row even with my head elevated on several pillows, the doctor gave me this.  My nonstop dry cough stopped for up to 5 hours, and then it came back, but less severe.  It doesn't last 8 hours, but it allowed me to get some much needed sleep.  Sucking sugar free cherry Luden's cough drop, and/or swallowing a teaspoon of honey without water help also. Also take Mucinex to thin secretions."