I am currently taking 10mg Diazepam manufactured by Mylan, for muscle spasms, insomnia and chronic migraine headaches w/anxiety. I have noticed no response whatsoever from this particular medication. I am not tired, relaxed, nor does it help w/ my headaches or anxiety. Has anyone else had this lack of response with Diazepam produced by this manufacturer. It seems (I can't remember for sure) that I have taken Valium or Diazepam at my dentist's office and felt a much different feeling. Maybe just different brand?