How to get electrolytes, from food and a DIY drink

1. 01

   What electrolytes are, and that food usually covers them

   Electrolytes are charged minerals in body fluids: sodium, chloride, potassium, magnesium, and calcium, that manage fluid balance, nerve signals, and muscle contraction. For a normally-eating, moderately-active person, food supplies enough, and the real intake problem is too much sodium and too little potassium, not deficiency (NIH ODS). So a daily electrolyte drink is not a baseline requirement; it is a tool for specific situations of increased loss.

2. 02

   When you actually need to add electrolytes

   Four situations warrant deliberate electrolyte replacement: prolonged or heavy sweating (intense exercise past about an hour, or hot and humid conditions), illness with vomiting or diarrhea, a low-carbohydrate or ketogenic diet (falling insulin increases sodium excretion), and extended fasting. Outside these, plain water and normal meals are enough. Matching your intake to the situation, rather than sipping electrolytes all day by default, is the evidence-led approach.

3. 03

   Sodium is the priority; potassium loss in sweat is small

   When you sweat heavily, sodium is the electrolyte you lose most: roughly 0.5-1.5 g of sodium per liter of sweat, versus only small potassium losses (Baker 2019). This is why plain water after a long, sweaty session can leave you feeling worse, and why a salty snack plus water often works better. Prioritize sodium during heavy-sweat replacement, and treat potassium, magnesium, and calcium as secondary, covered adequately by food for most people.

4. 04

   The food sources for each electrolyte

   You can meet electrolytes entirely from food. Sodium: table salt, broth, olives, pickles, cheese. Potassium: potatoes, beans and lentils, yogurt, leafy greens, and yes bananas (though potatoes and beans are denser). Magnesium: pumpkin seeds, spinach, black beans, almonds. Calcium: dairy, fortified plant milks, canned fish with bones, leafy greens. For most people, a salty broth or a snack with a potassium-rich food restores far more than a specialized product.

5. 05

   A DIY electrolyte drink, with numbers

   Dissolve about 1/4 teaspoon of table salt (roughly 575 mg sodium) in 500 mL of water, add a squeeze of citrus for flavor and a little potassium, and optionally a pinch of potassium chloride (sold as lite salt) for more potassium. A spoon of sugar or honey is not just for taste: glucose and sodium share a gut transporter, so a little carbohydrate helps you absorb sodium and water together. Adjust salt up for very heavy or prolonged sweating, down if you are watching blood pressure.

6. 06

   The WHO rehydration reference, and DIY vs a powder

   For rehydration during diarrhea, the clinical benchmark is the World Health Organization oral rehydration solution: 2.6 g sodium chloride, 1.5 g potassium chloride, 13.5 g glucose, and 2.9 g trisodium citrate per liter (WHO/UNICEF), a good template because it balances sodium, potassium, and glucose. For everyday needs a homemade drink costs pennies and works; a commercial powder buys convenience and a measured dose. Compare tested powders by $/serving in our best electrolyte powders ranking.

What people ask us next.

Q01

How do I get electrolytes naturally?

From ordinary food. Sodium from salt, broth, olives, and cheese; potassium from potatoes, beans, yogurt, and leafy greens; magnesium from pumpkin seeds, spinach, and beans; calcium from dairy and fortified foods. For most people this fully covers electrolyte needs, since the common intake problem is too much sodium and too little potassium, not deficiency (NIH ODS). A salty broth plus a potassium-rich food restores more than most specialized products.

Q02

Do I actually need an electrolyte drink every day?

For everyday life, no. A moderately-active person eating normally gets enough electrolytes from food and water. Deliberate replacement is worth it in four situations: heavy or prolonged sweating, illness with vomiting or diarrhea, a low-carb or ketogenic diet, or extended fasting. Outside those, a daily electrolyte drink is convenience or marketing, not a physiological requirement.

Q03

How do I make an electrolyte drink at home?

Dissolve about 1/4 teaspoon of table salt (roughly 575 mg sodium) in 500 mL of water, add a squeeze of citrus for flavor and a little potassium, and optionally a pinch of potassium chloride (lite salt). Add a spoon of sugar or honey if you want carbohydrate, since glucose and sodium share a gut transporter and are absorbed together with water. Scale the salt up for heavy sweating and down if you are managing blood pressure.

Q04

Which electrolyte matters most when I sweat?

Sodium. Sweat contains roughly 0.5-1.5 g of sodium per liter, while potassium losses are small (Baker 2019). That is why plain water after a long, hot session can leave you feeling flat, and why replacing sodium, with a pinch of salt or a salty snack, is the priority during heavy-sweat rehydration. Potassium, magnesium, and calcium are secondary and are usually well covered by food.

Q05

What is the WHO oral rehydration solution?

It is the clinical standard for rehydrating during diarrhea, and a useful template for a balanced electrolyte drink. The reduced-osmolarity formula is 2.6 g sodium chloride, 1.5 g potassium chloride, 13.5 g glucose, and 2.9 g trisodium citrate per liter (WHO/UNICEF). The glucose is essential: it drives sodium and water absorption through a shared gut transporter, which is why effective rehydration drinks pair sodium with a little sugar rather than sodium alone.

Q06

Is a homemade electrolyte drink as good as a commercial powder?

For most purposes, yes, at a fraction of the cost. A pinch of salt, a potassium source, water, and a little sugar covers the same needs a branded powder does. What a commercial powder buys is convenience and a precise, consistent dose, which some people prefer. If you want to compare, our best electrolyte powders ranking sorts tested products by $/serving so you can weigh the convenience against the pennies a DIY version costs.