Best Electrolyte Drinks Compared: LMNT vs Liquid IV vs DIY

Stand in front of the electrolyte shelf and you will find a dozen tubs and boxes, all promising the same thing in slightly different fonts. Rapid hydration. Cellular delivery. Science-backed formulation. What almost none of them tell you, at least not on the front of the package, is the one number that actually decides whether a drink does anything useful for you.

That number is sodium concentration: how much sodium ends up in each liter of the drink once you mix it. Get it right and you replace what you lost. Get it wrong and you are either drinking expensive salt water or, more commonly, sipping a sugary beverage that replaces a fraction of your losses while feeling productive about it.

This article puts the popular options side by side on that number, explains why the sugar-free ones are not automatically the better choice, and shows which situations actually justify buying anything at all.

The Only Number That Really Matters

Sweat is not just water. It carries sodium, and the concentration varies enormously between people: roughly 400 to 1,500 mg of sodium per liter of sweat, with most people landing somewhere near 900 to 1,000 mg per liter. Salty sweaters, the ones who find white crust on their hats and dark shirts, sit at the top of that range.

That gives you a target. If you lose a liter of sweat containing roughly 1,000 mg of sodium, a replacement drink at roughly that concentration puts you back where you started. This is why the electrolytes 101 guide frames sodium as the cornerstone rather than a supporting player: it is the mineral that holds fluid in your bloodstream instead of sending it to your bladder.

Here is the trap. Every product lists its numbers per serving, and servings are mixed into wildly different volumes of water. A stick with 330 mg of sodium sounds weaker than one with 500 mg, until you notice the first goes into 8 ounces of water and the second into 16. Per liter, the "weaker" one is stronger. Comparing per serving is comparing nothing at all.

The Comparison, Normalized Per Liter

Below is what each option actually delivers once mixed as directed, converted to a common basis. Sweat's own concentration, around 1,000 mg of sodium per liter, is the benchmark to read every row against.

The pattern is visible before you read a single label claim. The two products most people picture when they hear "electrolyte drink," Gatorade and coconut water, sit at the bottom of the sodium ranking, while the unglamorous medical rehydration formulas sit near the top. Here is what sits behind each row.

LMNT (about 2,000 mg sodium per liter): one stick delivers 1,000 mg of sodium, 200 mg of potassium, and 60 mg of magnesium into roughly 500 ml of water, with zero sugar. That is double the concentration of your own sweat and by far the most aggressive formula on the shelf. It is genuinely right for salty sweaters in extreme heat, long endurance efforts, and low-carb eating, and it is genuinely too much for a person who worked at a desk all day. Many people find the taste overwhelming for exactly this reason. Around $1.50 per serving.

DripDrop ORS (about 1,390 mg sodium per liter): 330 mg of sodium, 185 mg of potassium, and 39 mg of magnesium per stick, but mixed into only 8 ounces of water, which is what pushes the concentration high. It includes 7 g of sugar, deliberately, for reasons covered in the next section. Built on oral rehydration principles rather than sports marketing, it sits close to medical rehydration territory. Around $1.10 per serving.

Pedialyte (about 1,035 mg sodium per liter): roughly 1,035 mg of sodium and 780 mg of potassium per liter, ready to drink, with about 25 g of sugar per liter. It is the closest widely available product to the World Health Organization's oral rehydration formula, which lands near 1,040 mg of sodium per liter by design. The potassium content is the highest of any mainstream option, which matters after vomiting or diarrhea.

Liquid IV Hydration Multiplier (about 1,000 mg sodium per liter): 500 mg of sodium and 380 mg of potassium per stick into 500 ml, plus 11 g of sugar and 45 calories. Its concentration lands almost exactly on the average sweat benchmark, which makes it a reasonable general-purpose choice, and the sugar is doing real work rather than just sweetening. Around $0.94 per serving.

Nuun Sport (about 600 mg sodium per liter): 300 mg of sodium, 150 mg of potassium, and 25 mg of magnesium per tablet into 500 ml, with 1 g of sugar. Lighter than sweat, which suits shorter sessions and people who want flavor without a salt load. Cheap at roughly $0.65 per tablet and easy to carry.

Gatorade Thirst Quencher (about 450 mg sodium per liter): 160 mg of sodium and about 50 mg of potassium per 12 ounce serving, alongside 21 g of sugar. Per liter that is roughly 59 g of sugar and less than half the sodium your sweat contains. It is the most recognizable name here and the weakest replacement on the list, which is worth sitting with for a moment.

Coconut water (about 150 to 250 mg sodium per liter): very high in potassium, around 2,500 mg per liter, and very low in sodium. That inverted ratio makes it a poor sweat replacement despite the marketing, a point the coconut water breakdown covers in full. Pleasant drink, wrong tool.

Why Sugar-Free Is Not Automatically Better

The zero-sugar formulas look cleaner on the label, and for keto and fasting they clearly are. But there is a mechanism worth understanding before you assume sugar is only a marketing compromise.

Your small intestine absorbs sodium and glucose together through a shared transporter, and water follows them across passively. This is called glucose co-transport, and it is the entire reason oral rehydration solutions contain sugar. Pairing a small amount of glucose with sodium moves both, plus water, into your bloodstream measurably faster than sodium alone. It is the discovery that made oral rehydration therapy one of the most effective public health interventions of the last century.

So the honest framing is this. Sugar in the right ratio speeds absorption, which is why DripDrop, Pedialyte, and Liquid IV all include some and why they perform well when you need fluid back quickly. Sugar in soda quantities does the opposite: Gatorade's 59 g per liter exceeds the ratio that helps and slows gastric emptying instead. Zero sugar skips the mechanism entirely, which is a fair trade when you are eating low-carb or fasting and a real cost when you are recovering from a stomach bug.

That is why LMNT and Nuun are excellent for keto and low-carb and why neither is what you want when sick with vomiting or diarrhea. The formula is not better or worse in the abstract. It is matched or mismatched to the situation.

Matching the Product to the Situation

Most people need an electrolyte drink far less often than the marketing implies, and need a different one than they reach for when they do.

Ordinary day, desk work, moderate weather: none. Plain water and normal salted food cover it. Sports drinks outside of sport are sugar water with a calorie cost, and the most hydrating drinks ranking shows plain water performs perfectly well for routine maintenance.

Workout under an hour in cool conditions: still none. Water is sufficient, and the sodium you lost comes back with your next meal.

Long, hot, or heavy-sweat training: this is the real use case. Aim near your sweat's own concentration, so Liquid IV, DripDrop, or a diluted LMNT. The weigh-yourself-before-and-after method in athlete rehydration strategies tells you how much fluid you actually lost, which beats guessing. Logging training sessions alongside intake in an app like WinGym makes the pattern visible across a training block rather than a single day.

Salty sweater in extreme heat: LMNT is built for exactly this, and it is one of the few situations where 2,000 mg per liter is proportionate rather than excessive.

Illness with vomiting or diarrhea: Pedialyte or DripDrop, because you need the glucose co-transport and the high potassium. Skip the zero-sugar options here.

Hangover recovery: something with sodium and some sugar, sipped rather than chugged, as covered in hangover prevention and hydration.

Keto, fasting, or carnivore: LMNT or Nuun, where zero sugar is the point rather than a sacrifice.

One caution runs through all of these. More sodium is not automatically safer. Drinking large volumes of plain water during heavy sweating carries a genuine risk of diluting blood sodium, which the hyponatremia guide explains, but the answer is matching your losses rather than maximizing intake. If you have high blood pressure, kidney disease, or take medication affecting fluid balance, the sodium loads at the top of this list are worth discussing with a doctor first.

The DIY Option That Beats Most of Them

The unglamorous truth is that you can make something competitive with almost everything above for about five cents.

A quarter teaspoon of table salt dissolved in a liter of water delivers roughly 590 mg of sodium, landing near Nuun's territory. Half a teaspoon puts you around 1,180 mg per liter, close to DripDrop and Pedialyte. Add a splash of orange juice for potassium and a small amount of sugar or honey to enable glucose co-transport, and you have built a functional oral rehydration solution from three ingredients you already own.

What you lose is convenience, portability, consistent dosing, and taste. Those are real, and for many people they are worth a dollar a serving, because a drink you find unpleasant is a drink you will not finish. But it is worth knowing that the premium buys packaging and flavor rather than a mechanism unavailable to your kitchen.

What You Are Actually Paying For

Across a training block the cost gap compounds quickly. A daily stick at $1.50 runs about $45 a month; the DIY equivalent costs roughly a dollar and a half. The products earn their price through flavor that keeps you drinking, precise dosing you do not have to think about, and a sachet that fits in a pocket.

The mistake worth avoiding is buying on brand recognition or sodium bragging rights rather than on fit. The strongest formula is not the best one; the one matching your sweat, your diet, and the situation in front of you is. Tracking helps here more than product selection does, because it turns the question from "which powder is best" into "did I actually replace what I lost today." Logging fluid intake in Water Tracker shows whether your total landed where it should, and keeping electrolyte supplements visible in a companion app like Supplements Tracker shows whether your sodium and potassium intake matches what your training genuinely demanded rather than what the label suggested.

The Short Version

Compare products per liter, not per serving, because mixing volumes differ enough to reverse the ranking. Use your own sweat, at roughly 1,000 mg of sodium per liter, as the benchmark. LMNT sits at double that and suits salty sweaters and low-carb diets. Liquid IV and DripDrop land near the target and suit most training and recovery. Pedialyte owns illness. Nuun suits shorter and lighter sessions. Gatorade and coconut water, the two names everyone knows, replace the least.

And most days, on the ordinary ones without heavy sweat or illness, the correct answer remains plain water and food with salt in it. Electrolyte drinks are a tool for specific moments, not a daily upgrade, and knowing which moment you are in saves more money than picking the right tub ever will.

Further reading

• Electrolytes 101: When Water Isn't Enough
• What Are the Most Hydrating Drinks? Ranked by Science
• Coconut Water: Nature's Sports Drink, or Just Marketing?
• Athlete Rehydration: What to Drink Before, During, and After Training
• Hydration on Keto and Low-Carb: How to Beat the Keto Flu
• Can You Drink Too Much Water? Hyponatremia and Safe Limits