A Question About Pharmacy (Dramamine or Benadryl)

I'm taking a 12-hour long bus trip from Warsaw to Prague tomorrow. The problem is I hate bus trips and can't really sleep in a bus to kill some time. I am planning to get some Dramamine or Benadryl to fall asleep during the night trip. My question is, are they (Dramamine or Benadryl) sold in same name in Poland, or do they have different marketing names? I'm also open for any suggestions about over-the-counter pills to get sleep.

Thanks in advance.

I have looked up Dramamine and it appears it's not a sleeping pill but a motion sickness relieving agent and it should be available without a prescription - it is called Aviomarin - ok I know that larger amounts of Aviomarin/Dramamine will make you sleepy (from my experience one needs some 5 pills of Aviomarin to get one to sleep and yet it won't happen instantly - you should know that Aviomarin comes as very small pills in Poland and rather small packages of these - asking too many at a time will make it suspicious as it can be used as a drug (in the bad sense of the name)

actually Apap Noc contains diphenhydramine (25mg per pill) - the thing is it also contains paracetamol (the regular 500mg dose) - if you don't sweat after paracetamol it is worth considering (I used paracetamol as a pain killer - it's way too weak for a severe toothache but even 3 pills wouldn't make me sweat noticeably)

I have looked up Dramamine and it appears it's not a sleeping pill