Is anyone using or heard of using Vistaril (hydroxyzine) for uterine/gyn procedures. I did an endometrial ablation and the CRNA had me give 50mg IM Vistaril immediately after induction. I asked him mechanism of action or rationale and he said he learned it at a conference and it really seems to work with reducing cramping. This is a new one for me. Anyone doing this or heard of it? Thanks