Could Taking Zopiclone In Night Cause Sleepiness In The Next Morning?

If I were to take 7,5mg og zopiclone, would I just fall asleep of would i get high?because I'm going to work tomorrow and can't be buzzed tomorrow morning!I can't sleep at night and I was given these pills by the doctor, but haven't tried them yet.What would happen, would I be able to function normally tomorrow? I do have a large presentation.