Guide
What Is the Best Drink to Replace Electrolytes?
The honest answer is that four different drinks are each the best choice in different situations. Here is how to tell which situation you are in.
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The short answer
There is no single best drink, and any page that gives you one is answering a different question than the one you asked. What you should drink depends on how you lost the electrolytes in the first place, because the four realistic options are optimised for three different mechanisms.
If you want the one-line version:
- Ill, with vomiting or diarrhoea → an oral rehydration solution such as Pedialyte AdvancedCare Plus Powder or DripDrop ORS.
- Sweating heavily, or working in heat → a high-sodium zero-sugar mix such as LMNT Zero Sugar Electrolytes, Raw Unflavoured.
- Exercising for more than about ninety minutes → a sports drink that carries carbohydrate, such as Skratch Labs Sport Hydration Drink Mix.
- None of the above → water, and a meal.
The rest of this page explains why those splits exist, so you can place your own situation rather than take our word for it.
The four options, and what each is actually built for
1. Water
Worth stating plainly because it gets skipped: for the majority of people on the majority of days, water is the correct answer. Nearly all your sodium and potassium arrive through food, and average sodium intake in the United States already sits above the recommended limit. Adding an electrolyte drink to a sedentary day is solving a problem most people do not have.
Water stops being sufficient when losses are both large and fast — which is a narrower set of circumstances than the marketing implies.
2. Oral rehydration solutions
An ORS is a specific formulation, not a marketing category. It carries a defined ratio of glucose to sodium, and that ratio is the entire point: glucose and sodium are absorbed together in the small intestine through a shared transporter, and moving them together draws water across with them. This is the mechanism oral rehydration therapy is built on, and it is why an ORS rehydrates faster than water when someone is genuinely depleted.
It also explains something that confuses people: an ORS deliberately contains sugar, and a sugar-free version would not work the same way. DripDrop ORS carries 7 g of sugar in 8 fl oz (240 ml) for exactly this reason.
3. Sports drinks
A sports drink is a carbohydrate delivery system with sodium added. Its job is fuelling sustained exercise, with fluid and minerals alongside. Skratch Labs Sport Hydration Drink Mix sits here on purpose, with 19 g of sugar and 80 calories per serving.
Past roughly ninety minutes of exercise, carbohydrate intake starts to matter for performance, and taking it as a drink means one thing to carry instead of three. Below that, muscle glycogen covers the effort and those calories are just calories.
4. Zero-sugar electrolyte mixes
Minerals with little or no carbohydrate. Built for replacing what leaves in sweat, or for topping up sodium on a low-carbohydrate diet where kidney sodium retention genuinely drops. LMNT Zero Sugar Electrolytes, Raw Unflavoured is the clearest example: 1000 mg of sodium, 0 g of sugar.
These are the products most likely to be bought for the wrong reason. A 1000 mg sodium dose is appropriate after a long hot run and excessive at a desk. See how much sodium you actually need for how to place yourself.
Pick by situation
| Your situation | Category | Example | Why |
|---|---|---|---|
| Illness — vomiting or diarrhoea | Powder stick | Pedialyte AdvancedCare Plus Powder | Clinically established oral rehydration formulation |
| Heavy sweating, long or hot session | Powder stick | LMNT Zero Sugar Electrolytes, Raw Unflavoured | Highest sodium here at 1000 mg |
| Effort past ~90 minutes | Powder stick | Skratch Labs Sport Hydration Drink Mix | Carries 19 g of carbohydrate as fuel |
| Travel, hangover, mild dehydration | Powder stick | DripDrop ORS | ORS ratio in a portable stick |
All 10 products we cover are compared side by side on the comparison page, with the serving basis shown for each — which matters, because they are not measured the same way.
What about coconut water?
Coconut water is genuinely high in potassium and genuinely low in sodium. That combination makes it a reasonable everyday drink and a poor sweat-replacement one, because sweat is predominantly a sodium loss.
It is a decent choice if what you want is potassium, which is the electrolyte population intake data suggests people actually fall short on. It is the wrong choice after a hot two-hour ride. Some products split the difference — Cure Hydration uses a coconut water base and is the only product we cover that carries more potassium than sodium.
Making your own
You can make a serviceable rehydration drink from things you already own, and for illness specifically the World Health Organization's oral rehydration formulation is the reference standard. A rough domestic approximation is a litre of water, a level teaspoon of salt, and six level teaspoons of sugar.
Two honest caveats. First, measuring by teaspoon is imprecise, and with an ORS the ratio is the active ingredient — too much sugar makes it work worse, not better. Second, for a child or an older adult who is seriously ill, use a commercial product or seek medical advice rather than mixing your own.
For sweat replacement rather than illness the precision matters less, and the salt you use barely matters at all — we compared them.
Common questions
What is the fastest way to replace electrolytes?
An oral rehydration solution, if you are genuinely depleted. The glucose-to-sodium ratio in an ORS is formulated to maximise how quickly fluid crosses the intestinal wall, because glucose and sodium share a transporter and pull water across with them. That is why rehydration solutions work faster than water alone when someone is ill. For ordinary mild dehydration, water and a normal meal will do it.
Is Gatorade good for replacing electrolytes?
It replaces some, but it is designed as a carbohydrate drink first. A standard sports drink carries more sugar and less sodium than is ideal if replacement is your only goal. It suits sustained exercise where you also need fuel. For illness, an oral rehydration solution is a better match; for sweat replacement without calories, a zero-sugar mix is.
Can you replace electrolytes with just water?
For most everyday situations, yes — water plus normal food covers it, because food is where nearly all your sodium and potassium already come from. Water alone becomes insufficient when losses are large and fast: prolonged heavy sweating, or illness with vomiting and diarrhoea. Drinking large volumes of plain water during very long endurance events without replacing sodium is the mechanism behind exercise-associated hyponatraemia.
What drink has the most electrolytes?
Of the products we compare, LMNT Zero Sugar Electrolytes, Raw Unflavoured carries the most sodium at 1000 mg per serving, and Redmond Re-Lyte Hydration the most potassium at 400 mg. "Most" is rarely what you want, though — the right amount depends entirely on what you lost, and a dose built for heavy sweating is the wrong answer at a desk. Check the serving each figure refers to before comparing them, because they are not standardised.
Are electrolyte drinks better than water for hydration?
Only when you have lost electrolytes. Adding sodium to a drink helps you retain the fluid you take in, which matters after heavy sweating. Sitting at a desk, plain water is fine and the sodium is redundant — most people in the US already exceed sodium recommendations from food alone.
Sources
- World Health Organization. Diarrhoeal disease — on oral rehydration therapy.
- US Food & Drug Administration. Sodium in Your Diet .
- National Institutes of Health, Office of Dietary Supplements. Potassium: Fact Sheet for Health Professionals .
- Product figures from the manufacturer panels cited on each individual review.
Related reading
Guides
- When Is the Best Time to Drink Electrolytes?
Timing matters far less than most marketing suggests, but there are four situations where it genuinely changes the answer.
- What Salt Is Best for Electrolytes?
Every salt is about 98% sodium chloride. Here is what the remaining 2% actually is, and whether it justifies the price difference.
Products discussed
- DripDrop ORS — best oral rehydration ratio
- LMNT Zero Sugar Electrolytes, Raw Unflavoured — best overall for heavy or salty sweat
- Skratch Labs Sport Hydration Drink Mix — best for long endurance sessions
- Pedialyte AdvancedCare Plus Powder — best for illness and medical rehydration
General information, not medical advice. Electrolyte needs vary between individuals. If you have kidney disease, heart failure or high blood pressure, or take diuretics, ACE inhibitors or potassium-sparing medication, talk to a doctor or pharmacist before adding a sodium or potassium supplement.