The Sodium-to-Potassium Ratio in Electrolyte Drinks

By Sebastian Madlangbayan, founder of Cleonse: the world's cleanest 3-ingredient organic electrolyte.

The sodium-to-potassium ratio in an electrolyte drink tells you what job it's built for. Sweat is heavy on sodium and light on potassium, so a sweat-replacement drink should lean sodium-forward. Everyday health guidance, meanwhile, pushes more potassium from food. Cleonse is deliberately sodium-forward for exercise.

This is one of those label details that sounds nerdy but actually helps you choose the right product. Once you understand what the sodium-to-potassium ratio means, a lot of confusing marketing suddenly makes sense. So let me break it down plainly, including where my own product sits and why.

What the ratio actually is

The sodium-to-potassium ratio is just the amount of sodium in a serving compared to the amount of potassium. If a drink has 500mg of sodium and 100mg of potassium, that's a 5-to-1 ratio. If it has 100mg of sodium and 400mg of potassium, that's 1-to-4 the other way. Simple division, big implications.

The reason it matters is that sodium and potassium do related but different jobs in your body. Sodium is the main electrolyte in the fluid outside your cells and in your blood; it's central to fluid balance and to how much water you retain. Potassium is the main electrolyte inside your cells. Both matter, but they're lost and needed in very different amounts depending on what you're doing.

Sweat is sodium-heavy, and that's the key fact

Here's the physiological fact that drives everything: sweat contains a lot more sodium than potassium. A rough rule of thumb is that sweat carries somewhere around 900mg of sodium per liter but only on the order of 150 to 200mg of potassium per liter. So the sodium you lose during a hot, sweaty effort dwarfs the potassium you lose, by something like four or five to one.

That means if the whole point of your drink is to replace what you sweat out, it should be sodium-forward. A product with more potassium than sodium is, whatever its other merits, not matched to the composition of sweat. This is exactly why Cleonse is built around 500mg of sodium and leans sodium-forward: it's designed to replace sweat, and sweat is mostly sodium. I dig into the sodium side of this in my guide to how much sodium athletes need.

But everyday diet advice says eat more potassium — what gives?

This is where people get confused, so let me untangle it honestly. General population health guidance often emphasizes getting more potassium and less sodium. That advice is real and it's about your whole diet, not your workout drink.

Most people, on a typical modern diet full of processed food, take in plenty of sodium and not enough potassium across the day. Nudging that daily balance toward more potassium (from fruits, vegetables, beans, and other whole foods) is sensible general nutrition advice. But that's about your overall eating pattern, not about the specific moment during and after heavy exercise, when you've just sweated out a big slug of sodium and need to replace it.

So both things are true at once: eat a potassium-rich diet in general, and use a sodium-forward drink to replace sweat when you train hard. They're answering different questions. Confusing the two is how people end up sipping a low-sodium, high-potassium drink after a brutal sweaty session and wondering why they still feel wiped out.

How different products stack up

Ratios vary enormously across the category, and each ratio reveals the product's intended job. Here are a few examples, using labels I've verified.

You can see the story instantly. Cleonse is built to replace sweat sodium. Ultima and Prime are potassium-forward, which suits a daily-drink or beverage role better than heavy sweat replacement. None of these is "wrong" — they're just built for different jobs, and the ratio tells you which. Knowing this is a big part of learning to read an electrolyte label properly.

An honest word about Cleonse and potassium

I'm going to be straight with you, because that's the whole brand. Cleonse doesn't add potassium. The potassium in a stick comes only from the trace minerals naturally present in French grey sea salt, so it's genuinely minimal. That's a deliberate design choice, not an oversight: I built Cleonse to nail the sodium and fluid that sweat actually drains, using the shortest possible ingredient list.

The honest implication is this: if your specific goal is to supplement meaningful potassium — because a doctor advised it, or because your diet is genuinely low — then Cleonse isn't the tool for that, and a potassium-forward product or, better, more potassium-rich food is the right move. For replacing sweat and supporting hydration around exercise, sodium-forward is what you want, and that's exactly what Cleonse delivers. You can see the full label on our facts page.

How to use the ratio when you shop

Here's the practical takeaway. When you pick up any electrolyte product, glance at the sodium and potassium numbers and do the quick mental math. If you want to replace heavy sweat, favor a clearly sodium-forward product with a few hundred milligrams of sodium or more. If you want a light daily mineral drink and you already eat a fairly salty diet, a more balanced or potassium-forward product may suit you fine. And be wary of a big combined "electrolytes" number that hides a tiny sodium figure behind a large potassium one — always look at the individual numbers, not the sum.

What about chloride, magnesium, and calcium?

Sodium and potassium get top billing, but they aren't the only electrolytes. Chloride usually rides along with sodium (table salt and sea salt are sodium chloride, after all), so a sodium-forward drink is generally a chloride source too. Magnesium and calcium matter for muscle and nerve function, but you lose relatively little of either in sweat compared to sodium, and most people get enough from a reasonable diet.

That's why I didn't clutter Cleonse with added magnesium and calcium. Could I have thrown them in to make the label look more impressive? Sure — plenty of brands do exactly that. But adding token doses of five minerals so the ingredient panel looks busy isn't the same as building a product that does one job well. Cleonse focuses on the sodium and fluid that sweat actually drains, and lets your diet handle the rest. It's a philosophy, and I explain it fully in my cleanest electrolyte guide.

A worked example of a normal day

Picture a typical training day to see how this fits together. You eat a potassium-rich breakfast — fruit, maybe some yogurt — which supports the daily-diet side of the balance. Midday you do a hard, sweaty session and sweat out a big chunk of sodium. Right after, you mix a sodium-forward drink into 16 oz of water to replace that sodium and rehydrate. Dinner brings more potassium from vegetables and beans. Over the whole day, you've hit both goals: a potassium-rich diet overall, and targeted sodium replacement right when sweat demanded it. That's the ratio idea working in real life, not on a spreadsheet.

Frequently asked questions

What is a good sodium-to-potassium ratio for a sports drink?
For replacing sweat, sodium-forward is the goal, because sweat contains far more sodium than potassium. Exact ratios vary, but a drink built for sweat should clearly have more sodium than potassium.

If I should eat more potassium, why is my sports drink high in sodium?
Because they answer different questions. Eating more potassium is general daily-diet advice; a sodium-forward drink is about replacing the sodium you specifically lose in sweat during exercise. Both can be true at once.

Does Cleonse have potassium?
Only trace amounts from French grey sea salt. It's deliberately sodium-forward for sweat replacement. If you need meaningful added potassium, a potassium-forward product or potassium-rich food is the better route.

How much potassium do you lose in sweat?
Much less than sodium. Sweat carries roughly 150 to 200mg of potassium per liter versus around 900mg of sodium, which is why sweat replacement is mostly about sodium.

Should I worry about getting too much sodium from an electrolyte drink?
If you're sweating heavily, replacing sodium is the point and generally appropriate. If you're sedentary, have high blood pressure, or a doctor has told you to limit sodium, talk to them about what's right for you.

Keep reading

• How to Read an Electrolyte Label
• How Much Sodium Do Athletes Actually Need?
• What Is the Cleanest Electrolyte?

Editor's note: Sweat composition figures (approximately 900mg sodium and 150–200mg potassium per liter of sweat) reflect general sports-science data; population dietary guidance to increase potassium and moderate sodium reflects public-health sources. Competitor label figures — Ultima Replenisher (55mg sodium, 250mg potassium) and Prime Hydration (10mg sodium, 700mg potassium per 500 ml) — verified September 2026 via each brand's product/nutrition data. Cleonse figures reflect the current product label. This article is general information, not medical advice.