Which sleep aid should I use?

I need a sleep aid that keeps me a sleep and makes it nearly impossible to wake me up. Which one should I use? What are the side effects and how easy is it to get it?

most sleeping medications are very addictive so I only suggest using them periodically. I suggest diphenhydramide (pardon the misspelling) it is probably one of the safest and has a prolonged drowsiness compared to other Over the counter drugs. you can find this at you local pharmacy such a CVS or Walgreens