Your on the right track some antipsychotics lower blood pressure.

I am on 500mg quetiapine. When I was first put on it, at 300mg I would wake up before work every morning with a dizzy spell and have to stand out in the cold till it passed and I had a couple cups of tea to rehydrate. You simply have to build up a tolerance, if its keeping you well, mentally. It is worth getting used to. I have fainted on certain drugs like ripseridone, smashed my chin off the kitchen work tops. And when I took on a second job I had to sit down once as I was dizzy and they thought I was pregnant lol that was the quetiapine.