I got Normal Saline 1-3x a week for a year and a half. My 1L bag ran over two hours, but anything faster would make me sick...bad headache, worsening fatigue, uneasiness. Also, when I first started IV therapy the day I recieved fluids I always felt bad. I would need to lay in bed mostly, but the day following I would feel the benefits and increased energy. This went on for a few months and then I no longer felt sick from them. During these months though I was steadily improving...increasing BP, less syncope, so the IV's were working. I hope you feel better next time!