@athena I certainly agree that sports drink and rehydration solution levels of supplementation are generally quite safe, and while dehydration is the most common problem for J-pouchers, electrolytes can also get out of whack. However, supplements come in many strengths, some of them extreme - if you suggest supplementation without data and without dosing guidelines some folks will go too far. Healthy kidneys are indeed good at this, but assuming low potassium without a single lab test to confirm it unnecessarily invents a problem, when IMO it should merely be suspected. Assuming healthy kidneys in someone you don’t know much about can also lead to trouble. Are you really advising @maddie18 to *not* get her potassium checked? That’s really all I suggested.