Dramamine is dimenhydrinate, perhaps you confused it with diphenhydramine - aka Sominex or any number of other OTC sleep aids ... and yeah, the shit works!
If you WERE talking about Dramamine, then yes, to a lesser degree it will make you tired, but you REALLY don't want to take too many of them or you will be tripping into the next day (and it's NOT a fun trip, it's like a really long, bad PCP TRIP .. avoid at all costs...