Electrolyte drink mix: what most of them get wrong

"Electrolyte drink mix" is the most searched supplement term of 2026. Searches are up almost 2,000% year over year.

That kind of growth attracts a lot of junk. When a category explodes, brands rush in with a flavor, a pretty label, and a sprinkle of minerals that barely registers.

I make one of these products, so read this knowing that. But I'll keep the claims boring and true, and you can check every number I mention against any label in your cabinet.

Why everyone is suddenly buying an electrolyte drink mix

A few reasons, and they're mostly good ones.

People train harder than they did 5 years ago. Hybrid training took over: lifting plus running, lifting plus BJJ, lifting plus whatever hurts. More sweat, more loss.

And the "just drink more water" advice finally started to crack. If you sweat hard and only replace the water, you dilute what's left. Anyone who's finished a summer session with a headache and a weird foggy feeling has probably felt some version of this.

So the demand is real. The products often aren't.

What most electrolyte drink mixes get wrong

Two things, mostly.

Underdosing. Sweat sodium varies a lot from person to person, but the research puts it somewhere in the range of 500 to 2,000 mg per liter of sweat. A hard hour in the heat can cost you a liter or more. Now go read the sodium number on a typical sports drink or a "hydration" powder from a big brand. Many sit around 100 to 300 mg per serving. That's a rounding error against what you actually lost.

Selling flavor as function. A lot of mixes are built backwards: nail the taste, add enough minerals to legally say "electrolytes" on the front. The label looks like a supplement. The panel reads like a juice box.

Neither of these is a scandal. It's just what happens when marketing outruns formulation. The fix is simple: flip the pouch over and read the numbers.

What sodium, potassium, and magnesium actually do

Keeping this plain.

Sodium is the big one. It's the main electrolyte in your sweat and the main one in the fluid outside your cells. It helps you actually hold on to the water you drink instead of just passing it through. Low sodium plus heavy sweating is the classic recipe for cramping up, dragging through a session, and feeling off afterward.

Potassium does related work on the inside of your cells. It matters for normal muscle contraction and nerve signaling. You lose less of it in sweat than sodium, but it belongs in the formula, and most diets could use more of it anyway.

Magnesium is involved in hundreds of enzymatic reactions, including ones tied to muscle function. Sweat losses are smaller here too, but hard-training people are one of the groups that tend to run low overall. A modest dose in a drink mix is a reasonable place to backfill.

Notice what I'm not claiming. An electrolyte mix won't add plates to your squat or melt anything off your waist. It replaces what you lost so your training and your recovery aren't fighting a fluid deficit. That's the whole job.

When you actually need an electrolyte drink mix

Honest answer: sometimes you don't.

Desk day, easy walk, mild weather? Water and normal food cover you. Your meals carry more sodium than most people think.

Where a proper mix earns its spot:

• Long or hard sessions, especially in heat
• Two-a-days, or training plus manual work in the same day
• Heavy sweaters (if your shirt has salt lines, that's you)
• Early morning fasted training, when you've had nothing but coffee
• Anyone eating a lower-sodium whole-food diet who also trains hard

If none of that is you, save the money. I'd rather lose a sale than pretend everyone needs this every day.

How to pick one (and where Hydrate fits)

Flip the pouch. Check three things.

First, the sodium number. Is it in the hundreds of milligrams, or is it a token amount under a big "ELECTROLYTES" claim?

Second, potassium and magnesium. Present at real amounts, or just visiting?

Third, the sugar. Some sugar can help absorption during long endurance work. 30 grams of it in a "wellness" drink is just soda with better fonts.

I built Hydrate at Hollow Labs because I kept failing products on that 3-point check. Every dose is printed on the label at full amount, nothing hidden, and you can compare it against any competitor in about 20 seconds. Salted Raspberry and Watermelon sold out this summer, which tells me I'm at least not alone in wanting this done right.

Read the Hydrate label for yourself here.

If it doesn't beat whatever you're using now, keep what you've got. The pouch-flipping habit is the thing I actually want you to leave with.