MGMG
Welcome to HealingWell and the GERD/Heartburn Forum. I would advise you to talk with your physician before going off your medication cold turkey. Nexium and Prevacid seem to be the 2 meds members are posting about in re to weight gain.
I am on Priolosec but cannot say if it has caused weight gain because I was on an Antidepressant too that is notorious for weight gain. I weaned of the AD so now we will wait and see.
Take care and welcome.
Kitt