@azurite I don't have POTS (Postural orthostatic tachycardia syndrome), but have a some of the symptoms. My bp tends to be low and my heart beats fast for no reason at times. I think diet is one of the main things that is going to help you. Sodium helps… salty foods and not eating many processed foods. You could take salt tablets. I haven't done that yet. Instead of 4 meals a day divide the food into 4-5 meals.