Electrolytes vs Drink Mix: What's the Difference?

Electrolytes: salt without much energy

Electrolyte tablets and low-calorie hydration powders mostly provide sodium, with smaller amounts of potassium and magnesium. They help replace what you lose in sweat but contain little or no carbohydrate, so they won't fuel a long effort on their own. They're useful for shorter sessions, hot days, and for heavy or salty sweaters. Compare options in our electrolytes guide.

Drink mixes: carbs you can drink

Carb drink mixes deliver energy — often 30–90 g of carbohydrate per bottle depending on the product and how strong you mix it — usually with some sodium too. They let you fuel and hydrate in one go, which is why many triathletes and cyclists get much of their fueling from bottles. See our drink mixes guide.

Which do you need?

• Under about an hour, easy pace: water is usually enough
• Hot sessions or heavy sweating: add electrolytes
• Long or hard sessions (roughly 90 minutes and up): you need carbohydrate too — drink mix, gels or both
• Races: many athletes use a drink mix on the bike and gels plus water on the run

Don't double up by accident

If your drink mix already contains sodium and you add tablets on top, you may take in more salt than you need. Read the labels, find a routine that works in training, and keep it simple on race day. Needs vary a lot between people — this is general information, not medical advice.