pre-workout

I work out late at night and I take a pre-workout around 6 p.m. I'm usually home around 10 or 11 p.m. and it takes me awhile to fall asleep. I have to be up the next morning for work around seven or eight what is something that I can take to help me sleep

Has anyone tried gorilla mode it's a pre-workout and it has nitric oxide in it and it helps increase your pumps when you work out. I took some today before the gym and my Pumps were a little better but I also felt a little upset stomach taking it. do you think that will pass