Sodium vs chloride

I am deep in the weeds with this right now after a bout with hyponatremia this past week. I have a few questions if anyone has some insight:

  1. if a bottle calls out sodium and chloride independently, is it safe to assume that the sodium is sodium citrate?
  2. is sodium citrate a thing? These bottles have potassium, magnesium and calcium all in both citrate and chloride form. What is the difference?

I am quite confused about how citrate and chloride are different in all of it’s different forms (sodium, magnesium, calcium, potasium), and do we need both in all it’s different forms?

I’ve got my sweat test on order, but don’t even know what to do with the results at this point with all of these different forms of citrate/chloride