Short answer: Yes, you can typically drink electrolytes while fasting, and doing so usually does not break a fast if the electrolyte drinks are low in or free of calories and sugars. The main caveat is to choose products that align with your fasting goals (calorie-free or very low calorie) and to be mindful of timing and individual tolerance. What to consider

• Calorie impact: Most plain electrolyte drinks without added sugars or calories don’t break a fast. Check the label for total calories per serving; aim for beverages that are 5 calories or fewer per serving if you’re pursuing a strict fast. This aligns with common guidance that noncaloric electrolyte fluids support hydration without significantly interrupting the fasting state.
• Sodium and potassium: During fasting, electrolyte losses can be more noticeable, especially with longer fasts or higher activity. Replenishing sodium and potassium can help prevent headaches, dizziness, or cramps and support hydration efficiency.
• Carbohydrates and sweeteners: Avoid electrolyte products with sugars, honey, fruit juice, or artificial sweeteners that contain calories, as these can stimulate an insulin response or technically break a fast, depending on the fasting protocol you’re following.
• Hydration vs hunger signals: Electrolyte drinks can reduce perceived hunger and improve energy during fasting, but if you’re extremely sensitive to any calories, you may prefer plain water and small, controlled electrolyte sips.
• Individual considerations: People with specific medical conditions (such as kidney disease, or those on sodium-restricted diets) should consult a healthcare professional before routinely using electrolyte supplements during fasting.

Practical tips

• Choose: A sugar-free, calorie-free electrolyte solution or powder. Use only as needed to maintain hydration and electrolyte balance.
• Timing: If you’re aiming for a mid-fast electrolyte intake, sip as needed when you feel dehydration signs (thirst, dry mouth, dark urine) rather than consuming large amounts at once.
• Quantity: Start with a small amount and assess tolerance; excessive sodium intake can cause bloating or discomfort for some individuals.

If you’d like, share your fasting protocol (length of fast, activity level, any medical conditions), and I can tailor the electrolyte approach to fit your plan.