Diclegis after unisom/b6 trial

Anyone have any luck with diclegis after failing with unisom and vitamin b6? They're the same active ingredients, but does the fact that diclegis is extended release make any sort of difference for anyone, other than perhaps decreasing the drowsiness? I'm hesitant to take unisom because it puts me right to sleep, but the few times I took it with b6 I didn't notice a difference in my nausea.