Hello, I don t know if this is the cause of low blood pressure or not, but still curious to know. Whenever I stand up I feel fine until 5 seconds later. I get a bit dizzy and see my vision fade out like a blackout, however, it lasts for 3 seconds then back to normal. I don t always go through this but lately I have. Is this the cause of low blood pressure or not? Please and thank you. Also, how can I avoid this in the near future?