Ah. In that case, try 2 or 3 of them. That's what I do at night to help me sleep. I have the same prescription that you do, but I'm prescribed 3 a day.
It won't kill you. But it's too much. You won't even remember having a good time, if you do have a good time. And you might do stupid shit like go driving around (which might kill you or land you in jail) or make phone calls/texts you shouldn't make and say things that can't be unsaid.