I was prescribed Xanax yesterday for my panic attacks. I have see...

I was prescribed Xanax yesterday for my panic attacks. I have seen many people in treatment and rehab centers for chemical addictions that also raved about Xanax and the "high" that came with it. I took my first dose yesterday and was so tired it was all I could do to crawl to bed. Is that normal? Does it make you extremely drowsy every time it is taken? If so, I can't imagine what the "high" most people get from it would be. Any input would be great!