I would first try oral supplements of sodium citrate and possibly potassium and magnesium as well. Take about 8 extra grams of sodium typically in tablet form. There is plain sodium pills or vitassium has all 3 electrolytes but bit more expensive. Try a regimen of those 8 extra g of sodium first. I’d use infusion as a last resort. They come with their own complications of infection; and are expensive and generally a pain in the ass personally lol Ports come with tons of restrictions and rules so overtime I realized it wasn’t right for me. Oral sodium and vitassium worked for me and allowed lot more freedom without a port and wayyy less expensive. I’d use a port/saline infusions as a last resort if oral treatments don’t seem to be working. Also for a prescription you just need to talk to your doctor who is treating your dysautonomia and see how they want to go about it. Hope that helps and you feel better soon