This patient support community is for discussions relating to Dysautonomia (Autonomic Dysfunction) including: Postural orthostatic tachycardia syndrome (POTS), neurocardiogenic syncope, mitral valve prolapse dysautonomia, pure autonomic failure, autonomic instability and others.
Serotonin is one of the major neurotransmitters that the brain uses to control autonomic functions within the body. Doctors speculate that individuals with Autonomic Dysfunction could have some dysregulation in their central serotonin production. Since these medications are primarily used for depression/anxiety, they could theoretically take the edge off of any medically-related stress as well.
I take a very small dose of Prozac (5mg daily), and I believe it probably does help. Although I am taking it in combination with the rest of my medication cocktail, so I suppose it's difficult to know for certain. It does take the edge of my "fainting phobias" though.
So in short, it probably is helpful to some individuals. I suppose the opposite is also true though, seeing as how chemical-sensitive most people with Dysautonomia are. So I guess it's kind of a trial/error process.
I'm sorry I couldn't be of more help. Good luck!