Promethazine
"I have had stomach issues due to my GERD and have tried Zofran and it didn't work at all. My DR then had me try out Promethazine for whenever I feel nauseous when my GERD acts up or I eat something that makes me feel sick and it's gone within 15-20 minutes. It hasn't made me tired, but sometimes I will get a very quick blurred vision spell which I was warned about. But I love it.. it really helps me out"