Vi-Q-Tuss and medication

I am unable to sleep when I take this medication.

This medication gave me a terrible headache. As long as I was laying down I was ok, but as soon as I stood up I became extremely clammy and started throwing up. It helped with my cough but not to the extent I would ever take it again.

"This patients medication has just been replaced with nasty syrup water. Let's see if he notices." Absolutely nothing. Is this a placebo medication? No nausea, no dizziness, but most importantly, no cough relief - just a disgusting taste in my mouth. Dr said if nothing else, it will help me sleep. Uh, no, it's not good for that either. Maybe I'm resistant to this drug?

Can anyone tell me the main side effects of this particular medication. My mother would like to know. A site would be great that can give me all the information I need. Thanks.
:D