hi i am 20 years old and been off zoloft for three years now. I have been getting the shakes fast heartbeat, dizzy and headaches since then. Some times i thought it was from maybe skipping a meal but now i eat well very healthy do chew tobacco though. This happens out of the blue can be working, or just get up from the sofa and it hits me also i get breathing differently like ashort in breath. any helpful info is appreciated thanks