Does electrolytes break a fast?
Okay when zero sugar
0-10 kcal
Maybe - use caution. Electrolytes can help longer fasts, workouts, heat, and lightheadedness.
Electrolytes can help longer fasts, workouts, heat, and lightheadedness.
Sodium, potassium, and magnesium carry no usable calories, so zero-sugar electrolytes keep the fast intact. Sugar or dextrose versions do not.
Base tier: 60/100 for "Use caution". Item adjustment: +25 points for calories, nutrient signal, product variability, and safety caution. Final Fast Score: 85/100.
Choose zero sugar powders or tablets. Sweetened hydration mixes belong in the eating window.
If you have high blood pressure, kidney disease, heart failure, or a sodium-restricted diet, check with a clinician before adding sodium or electrolyte salts.
The Fast Score is an editorial estimate of clean-fast strictness, not medical advice. Goals vary — if you fast for glucose, appetite, or medical reasons, follow your clinician.