I Was Prescribed Cheratussun. And Ranitidine For My Persistent Cough.

I was prescribed cheratussun. and ranitidine for my persistent cough. I took it three 1/2 hours ago and have had no relief....and can't seem to sleep. Is there a drug interaction with these medications than can affect sleep? I was told the cough syrup would make me drowsy. I wish!

Never mind. Didn't know this was a charged service.