Quote Originally Posted by peakbagger View Post
I use oral replacement salts. WHO has a standard formulation and various companies make it. I buy mine on Amazon..

https://www.nejm.org/doi/full/10.1056/NEJMoa043901 describes how short term electrolyte imbalances happen to marathon runners.
so I looked at the article and that is actually about hyponatremia and doesn't discuss electrolyte replacement for multiday/week events. but good article

As for ORS, do you use them daily or weekly or "as needed?"
Also, ORS are basically SODIUM, which most everyone (I'm guessing 90%) get more than enough in their eating (those who eat prepackaged foods or simply add it to food). But they leave out the other important electrolytes like potassium, magnesium, calcium, choride, bicarbonate, and phosphate. So what do you do for those?